5x(x+7)+9=-66

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Solution for 5x(x+7)+9=-66 equation: 



5x(x+7)+9=-66

We move all terms to the left:

5x(x+7)+9-(-66)=0

We add all the numbers together, and all the variables

5x(x+7)+75=0

We multiply parentheses

5x^2+35x+75=0

a = 5; b = 35; c = +75;
Δ = b2-4ac
Δ = 352-4·5·75
Δ = -275
Delta is less than zero, so there is no solution for the equation

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