9x^2-21x+9=-9

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Solution for 9x^2-21x+9=-9 equation: 



9x^2-21x+9=-9

We move all terms to the left:

9x^2-21x+9-(-9)=0

We add all the numbers together, and all the variables

9x^2-21x+18=0

a = 9; b = -21; c = +18;
Δ = b2-4ac
Δ = -212-4·9·18
Δ = -207
Delta is less than zero, so there is no solution for the equation

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