Question

A=4x+4 e B=x-7 determine o polinomio 2A+5B

Answer 1

2A = 2.(4x+4) = 8x+8
5B = 5.(x-7) = 5x - 35

8x+8+5x-35 = 13x - 27

Answer 2

Olá!

A = 4x + 4
B = x - 7

Calculando 2A e 5B:

2A = 2 . ( 4x + 4 )
2A = 8x + 8

5B = 5 . ( x - 7 )
5B = 5x - 35

Somamos agora:

8x + 8 + 5x - 35

Logo:

= 13x - 27