Question

(
–
7d+4)+(
–
4d2+9d–2)

Answer 1

First remove parentheses and combine like terms:

(−7d + 4) + (−4d^2 + 9d − 2)
= −4d^2 + (−7d + 9d) + (4 − 2)
= −4d^2 + 2d + 2.

Factored form: −4d^2 + 2d + 2 = −2(2d^2 − d − 1) = −2(2d + 1)(d − 1).