-4n^2=12

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Solution for -4n^2=12 equation: 



-4n^2=12

We move all terms to the left:

-4n^2-(12)=0

a = -4; b = 0; c = -12;
Δ = b2-4ac
Δ = 02-4·(-4)·(-12)
Δ = -192
Delta is less than zero, so there is no solution for the equation

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