Quadratic equations lessons
90 animated step-by-step lessons (Algebra). Solve quadratics by factoring, completing the square or the quadratic formula, including complex roots.
Showing 1–24 of 90
- Video lesson0:58AlgebraHigh school7 stepsSolve x² + 9x + 1 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve 3x² - 33x + 54 = 0
Quadratic equations
- Video lesson0:58AlgebraHigh school7 stepsSolve -2x² - 17x + 8 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² - 8x + 15 = 0
Quadratic equations
- Video lesson0:57AlgebraHigh school7 stepsSolve 3x² + 7x - 7 = 0
Quadratic equations
- Video lesson0:59AlgebraHigh school8 stepsSolve x²/4 - x/2 = 2
Quadratic equations
- Video lesson0:55AlgebraHigh school6 stepsSolve 2x² + 2x + 7 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve 2x² - 26x + 84 = 0
Quadratic equations
- Video lesson0:53AlgebraHigh school7 stepsSolve x² = x
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 4x² - 8x - 12 = 0
Quadratic equations
- Video lesson1:02AlgebraHigh school4 stepsSolve -x² - 7x - 10 = 0
Quadratic equations
- Video lesson0:48AlgebraHigh school7 stepsSolve 9x² - 18x + 8 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve x² + 4x - 3 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve x² + 14x + 45 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 3x² - 2x - 6 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 3x² + x - 2 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 4x² - 12x - 39 = 0
Quadratic equations
- Video lesson0:53AlgebraHigh school7 stepsSolve x² = 2
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² - 4x - 21 = 0
Quadratic equations
- Video lesson0:49AlgebraHigh school7 stepsSolve 12x² + 17x - 7 = 0
Quadratic equations
- Video lesson0:39AlgebraHigh school6 stepsSolve 4x² - 12x + 9 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 3x² - 7x - 3 = 0
Quadratic equations
- Video lesson0:57AlgebraHigh school6 stepsSolve 3x² + 2x + 1 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve -x² + x + 30 = 0
Quadratic equations
- Video lesson0:51AlgebraHigh school6 stepsSolve 2x² - 4x + 6 = 0
Quadratic equations
- Video lesson0:57AlgebraHigh school7 stepsSolve x² + 9x - 6 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 3x² + 2x - 8 = 0
Quadratic equations
- Video lesson0:57AlgebraHigh school7 stepsSolve 12x² - 2x - 11 = 0
Quadratic equations
- Video lesson0:53AlgebraHigh school7 stepsSolve x² - 2x = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² - 6x - 8 = 0
Quadratic equations
- Video lesson0:50AlgebraHigh school6 stepsSolve x² + 4x + 13 = 0
Quadratic equations
- Video lesson0:48AlgebraHigh school6 stepsSolve 3x² + 48x + 192 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² - 13x + 36 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² + x - 42 = 0
Quadratic equations
- Video lesson0:47AlgebraHigh school6 stepsSolve x² + 1 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve x² - 9x - 7 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve 2x² - 7x + 3 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² - 13x + 42 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² + 2x - 24 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² - 9x + 3 = 0
Quadratic equations
- Video lesson0:58AlgebraHigh school7 stepsSolve 6x² + 23x - 34 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve (x + 3)(x - 2) = 14
Quadratic equations
- Video lesson0:55AlgebraHigh school6 stepsSolve 3x² + x + 3 = 0
Quadratic equations
- Video lesson0:47AlgebraHigh school6 stepsSolve 3x² + 6x + 3 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² - 8x + 2 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² - 14x - 36 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 3x² + 18x = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve 8x² + 8x = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² + 2x = 0
Quadratic equations
- Video lesson1:01AlgebraHigh school4 stepsSolve -x² - x + 42 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² - 2x - 1 = 0
Quadratic equations
- Video lesson0:57AlgebraHigh school7 stepsSolve 2x² + x - 5 = 0
Quadratic equations
- Video lesson0:53AlgebraHigh school7 stepsSolve x² - 7x = 0
Quadratic equations
- Video lesson0:59AlgebraHigh school7 stepsSolve 11x² + 24x + 11 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² − 4 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² - 4x - 45 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² - 6x - 6 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 3x² - 7x - 8 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve x² + 12x + 27 = 0
Quadratic equations
- Video lesson0:46AlgebraHigh school6 stepsSolve x² - 6x + 9 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 4x² + 12x = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² - 6x + 2 = 0
Quadratic equations
- Video lesson0:39AlgebraHigh school6 stepsSolve 9x² - 6x + 1 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve -x² + 17x - 72 = 0
Quadratic equations
- Video lesson0:57AlgebraHigh school7 stepsSolve 2x² + 15x + 7 = 0
Quadratic equations
- Video lesson0:59AlgebraHigh school7 stepsSolve -3x² - 19x - 18 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² + 6x = 16
Quadratic equations
- Video lesson0:47AlgebraHigh school7 stepsSolve 8x² - 24x + 10 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 3x² + 5x - 8 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 5x² - 10x + 4 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve x² + 3x - 18 = 0
Quadratic equations
- Video lesson0:53AlgebraHigh school7 stepsSolve 3x² - 15x = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve -5x² + 24x - 8 = 0
Quadratic equations
- Video lesson0:39AlgebraHigh school6 stepsSolve 8x² - 24x + 18 = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve x² + 9x + 20 = 0
Quadratic equations
- Video lesson0:57AlgebraHigh school7 stepsSolve -11x² + 29x + 7 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² = 3x + 2
Quadratic equations
- Video lesson0:55AlgebraHigh school6 stepsSolve -7x² + 13x - 31 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² - 5x + 4 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² - 8x - 6 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve 4x² - 10x = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² - 6x - 36 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² - 2x - 144 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve (2x - 1)² = 25
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve 3x² + 15x + 12 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² + 4x - 48 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve x² + 5x = 0
Quadratic equations
- Video lesson0:56AlgebraHigh school7 stepsSolve x² + 4x - 7 = 0
Quadratic equations
- Video lesson0:54AlgebraHigh school7 stepsSolve 3x² - 15x + 18 = 0
Quadratic equations
- Video lesson0:55AlgebraHigh school7 stepsSolve 2x² - 8x - 64 = 0
Quadratic equations
More topics in Algebra
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- Simplifying expressions (48)
- Rational equations (30)
- Radical equations (36)
- Exponential equations (43)
- Logarithms (60)
- Sequences and series (29)