Question

responda pfvr ❤️ tá?​

Answer 1

Resposta:

a)1 b) 0 c) 12 d)18

Explicação passo-a-passo:

a)3x+1/7

x=2

3.(2)+1/7

6+1/7

7/7=1

b) x^2-5x+8

x=2

(2)^2-5.(2)+6

4-10+6

-6+6=0

c) x^2+3x+2

x=2

(2)^2+3.(2)+2

4+6+2

12

d)x^3+2x^2+x/2+1

x=2

(2)^3+2(2)^2+(2)/2+1

8+2.4+1+1

8+8+2

18