Question

Which of these is the standard form of the following function?

f(x) = -9(x + 5)2 + 4
f(x) = -9x2 - 90x - 221
AX) = 9x2 - 90x - 221
f(x) = -9x2 – 180x – 221
RX) = 9x2 - 180x + 221

Answer 1

Answer: Bro write the question better

Explanation:

Answer 2

A

Explanation:

Given

f(x) = - 9(x + 5)² + 4 ← expand parenthesis using FOIL

= - 9(x² + 10x + 25) + 4 ← distribute parenthesis by - 9

= - 9x² - 90x - 225 + 4 ← collect like terms

= - 9x² - 90x - 221 ← in standard form