F(-5)=5x^2+9x+6

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Solution for F(-5)=5x^2+9x+6 equation: 



(-5)=5F^2+9F+6

We move all terms to the left:

(-5)-(5F^2+9F+6)=0

We add all the numbers together, and all the variables

-(5F^2+9F+6)-5=0

We get rid of parentheses

-5F^2-9F-6-5=0

We add all the numbers together, and all the variables

-5F^2-9F-11=0

a = -5; b = -9; c = -11;
Δ = b2-4ac
Δ = -92-4·(-5)·(-11)
Δ = -139
Delta is less than zero, so there is no solution for the equation

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