F(-7)=2x^2-7x+15

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Solution for F(-7)=2x^2-7x+15 equation: 



(-7)=2F^2-7F+15

We move all terms to the left:

(-7)-(2F^2-7F+15)=0

We add all the numbers together, and all the variables

-(2F^2-7F+15)-7=0

We get rid of parentheses

-2F^2+7F-15-7=0

We add all the numbers together, and all the variables

-2F^2+7F-22=0

a = -2; b = 7; c = -22;
Δ = b2-4ac
Δ = 72-4·(-2)·(-22)
Δ = -127
Delta is less than zero, so there is no solution for the equation

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