Question

calcule os valores de x na função G(x)=2x²+2x-12 quando:

a)g(x)=-8
b)g(x)=-12
c)g(x)=0​

Answer 1

a) 2x^2+2x-12=-8

2x^2+2x-12+8=0

2x^2+2x-4=0

x= -2+-V36/2×2

x= -2+-6/4

x1= -2+6/4》x1=1

x2= -2-6/4 》x2= -2