Advanced Math practice question

Answer: 0

(3x² + 7x + 2) − (3x² + 9x) = −2x + 2, so a = −2, b = 2, and a + b = 0.

Common wrong answers

If you answered 2

2 is b alone.

If you answered 4

4 comes from 2x + 2 (wrong sign on a).

If you answered -2

−2 is a alone.

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