Advanced Math practice question

Answer: -6

The intercepts are at x = 1 and x = −7, which sum to −6.

Common wrong answers

If you answered 6

The second intercept is x = −7 (sign flips from the factor x + 7): 1 + (−7) = −6.

If you answered 8

8 is the distance between the intercepts, not their sum.

If you answered -7

−7 is one intercept alone; add the other, x = 1.

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