X^2-12x+72=-9

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Solution for X^2-12x+72=-9 equation: 



X^2-12X+72=-9

We move all terms to the left:

X^2-12X+72-(-9)=0

We add all the numbers together, and all the variables

X^2-12X+81=0

a = 1; b = -12; c = +81;
Δ = b2-4ac
Δ = -122-4·1·81
Δ = -180
Delta is less than zero, so there is no solution for the equation

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