Middle School

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

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

Answer :

Answer:

A

Step-by-step 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

Answer: Bro write the question better

Step-by-step explanation:

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