WEBVTT

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Here is the problem: 5x squared minus 3x plus 2x squared plus 7x.

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Simplify the polynomial expression in x.

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Read the expression.

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Combine like terms. x squared: 5 plus 2 equals 7; x: negative 3 plus 7 equals 4. Like terms have identical variables and exponents, so only their coefficients are added.

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Write the result in standard form. Terms are ordered by descending total degree.

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So the answer is 7x squared plus 4x.

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After expanding and combining like terms the expression is 7x squared plus 4x, a polynomial of degree 2 with 2 terms.

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Spot check at x equals 0.73: original 6.6503, simplified 6.6503, which checks out.