kelerobedfsdf kelerobedfsdf
  • 03-10-2020
  • Mathematics
contestada

VERY URGENT PLZ HELP

If f(x)=[tex]x^{2}[/tex]−x , then evaluate f(a−4) .




A) [tex]a^{2}[/tex]−9a+20


B) [tex]a^{2}[/tex]−9a+12


C) [tex]a^{2}[/tex]−a−20


D)[tex]a^{2}[/tex]−4

Respuesta :

lavencheong06
lavencheong06 lavencheong06
  • 04-10-2020

Answer:

B)

Step-by-step explanation:

(a-4)²-a-4

a²-8a+16-a-4

a²-9a+12

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