g(-4)=2(-4)^2+5(-4)-8

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Solution for g(-4)=2(-4)^2+5(-4)-8 equation: 



g(-4)=2(-4)^2+5(-4)-8

We move all terms to the left:

g(-4)-(2(-4)^2+5(-4)-8)=0

We add all the numbers together, and all the variables

g(-4)-4=0

We multiply parentheses

-4g-4=0

We move all terms containing g to the left, all other terms to the right

-4g=4

g=4/-4

g=-1

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