Question

(
–
7x2+9x–5)–(
–
5x2–1)

Answer 1

Start by removing the parentheses (distribute the minus sign):

(−7x^2 + 9x − 5) − (−5x^2 − 1)
= −7x^2 + 9x − 5 + 5x^2 + 1
= −2x^2 + 9x − 4.

Factored form: −2x^2 + 9x − 4 = −(2x − 1)(x − 4).