F(-3)=5x2+7

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Solution for F(-3)=5x2+7 equation: 



(-3)=5F^2+7

We move all terms to the left:

(-3)-(5F^2+7)=0

We add all the numbers together, and all the variables

-(5F^2+7)-3=0

We get rid of parentheses

-5F^2-7-3=0

We add all the numbers together, and all the variables

-5F^2-10=0

a = -5; b = 0; c = -10;
Δ = b2-4ac
Δ = 02-4·(-5)·(-10)
Δ = -200
Delta is less than zero, so there is no solution for the equation

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