vivianhowerton
vivianhowerton vivianhowerton
  • 07-11-2017
  • Mathematics
contestada

What is the value of 3x ( 2x²+6x+3) when x is -3?

a. -27
b. 0
c. 27
d. 54

Respuesta :

suspho
suspho suspho
  • 08-11-2017

3x ( 2x²+6x+3)=
3(-3)(2*3²+6*3+3)
-9 (2*9-18+3)=
-9 (18-18+3)=
-9 (0+3)
-9*3=
-27

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