F(-3)=3x^2+5

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Solution for F(-3)=3x^2+5 equation: 



(-3)=3F^2+5

We move all terms to the left:

(-3)-(3F^2+5)=0

We add all the numbers together, and all the variables

-(3F^2+5)-3=0

We get rid of parentheses

-3F^2-5-3=0

We add all the numbers together, and all the variables

-3F^2-8=0

a = -3; b = 0; c = -8;
Δ = b2-4ac
Δ = 02-4·(-3)·(-8)
Δ = -96
Delta is less than zero, so there is no solution for the equation

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