a^2-15a=-80

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Solution for a^2-15a=-80 equation: 



a^2-15a=-80

We move all terms to the left:

a^2-15a-(-80)=0

We add all the numbers together, and all the variables

a^2-15a+80=0

a = 1; b = -15; c = +80;
Δ = b2-4ac
Δ = -152-4·1·80
Δ = -95
Delta is less than zero, so there is no solution for the equation

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