WEBVTT

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Here is the problem: x squared plus 2x plus 3 less than 0.

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Solve the inequality and give the answer in interval notation.

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Move everything to one side and factor. A sign chart needs the form f(x) compared with 0, written as a product/quotient of factors.

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Find the critical points. There are no real critical points, so the expression keeps one sign for every x.

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Write the solution set.

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So the answer is No solution (∅).

7
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No real number satisfies the inequality.

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x equals 0: does not satisfy the inequality.