x^2+10x+25=-15

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Solution for x^2+10x+25=-15 equation: 



x^2+10x+25=-15

We move all terms to the left:

x^2+10x+25-(-15)=0

We add all the numbers together, and all the variables

x^2+10x+40=0

a = 1; b = 10; c = +40;
Δ = b2-4ac
Δ = 102-4·1·40
Δ = -60
Delta is less than zero, so there is no solution for the equation

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