Question

VERY URGENT PLZ HELP

If f(x)=$x^{2}$−x , then evaluate f(a−4) .




A) $a^{2}$−9a+20


B) $a^{2}$−9a+12


C) $a^{2}$−a−20


D)$a^{2}$−4

Answer 1

Answer:

B)

Step-by-step explanation:

(a-4)²-a-4

a²-8a+16-a-4

a²-9a+12