-12=x^2+4x

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Solution for -12=x^2+4x equation: 



-12=x^2+4x

We move all terms to the left:

-12-(x^2+4x)=0

We get rid of parentheses

-x^2-4x-12=0

We add all the numbers together, and all the variables

-1x^2-4x-12=0

a = -1; b = -4; c = -12;
Δ = b2-4ac
Δ = -42-4·(-1)·(-12)
Δ = -32
Delta is less than zero, so there is no solution for the equation

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