f(-2)=4(-2)^2-3(-2)+8

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Solution for f(-2)=4(-2)^2-3(-2)+8 equation: 



f(-2)=4(-2)^2-3(-2)+8

We move all terms to the left:

f(-2)-(4(-2)^2-3(-2)+8)=0

We add all the numbers together, and all the variables

f(-2)-30=0

We multiply parentheses

-2f-30=0

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

-2f=30

f=30/-2

f=-15

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