x^2+72=-15x

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Solution for x^2+72=-15x equation: 



x^2+72=-15x

We move all terms to the left:

x^2+72-(-15x)=0

We get rid of parentheses

x^2+15x+72=0

a = 1; b = 15; c = +72;
Δ = b2-4ac
Δ = 152-4·1·72
Δ = -63
Delta is less than zero, so there is no solution for the equation

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