Question

f(×)=2×-6

f(×)=×+8

f(×)=2×

f(×)= -3×​

Answer 1

Explicação passo-a-passo:

f(x)=2x-6

0=2x-6

-2x= -6

x=3

f(x)=x+8

0=x+8

-x=8

x= -8

f(x)=2x

0=2x

2x=0

x=0

f(x)=-3x

0= -3x

-3x=0

x=0