Question

calcule os valores de × na função g(x)=2×+2x-12 quando:
a)g(x)=-8
b)g(x)=-12
c)g(x)=0

Answer 1

a) g(x)=2x+2x-12
-8=4x-12
-8+12=4x
4=4x
x=1

b) g(x)=12

g(x)=2x+2x-12
-12=4x-12
-12+12=4x
x=0

c) g(x)=0

g(x)=2x+2x-12
0=4x-12
12=4x
12/4=x
x=3