Advanced Math practice question

Answer: -4

x² + 4x − 21 = (x + 7)(x − 3) = 0, so the solutions −7 and 3 sum to −4.

Common wrong answers

If you answered 4

4 has the sign wrong.

If you answered 10

10 is the difference of the solutions.

If you answered -21

−21 is the product of the solutions.

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