rebeccam19 rebeccam19
  • 21-06-2021
  • Mathematics
contestada

help with the question below please!!

help with the question below please class=

Respuesta :

Аноним Аноним
  • 21-06-2021

Answer:

a.= 24 b.=-21 c. is x=-7 or 3

Step-by-step explanation:

Answer Link
Mimosa2021
Mimosa2021 Mimosa2021
  • 21-06-2021

Step-by-step explanation:

a) f(5)= 5² + 4 x 5 -21

=24

b) f(0)= 0² + 4 x 0 -21

= -21

c) f(x)= 0

=> x² + 4x -21 =0

=> x = 3, x= -7

Answer Link

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