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3x^2-48x=-256
We move all terms to the left:
3x^2-48x-(-256)=0
We add all the numbers together, and all the variables
3x^2-48x+256=0
a = 3; b = -48; c = +256;
Δ = b2-4ac
Δ = -482-4·3·256
Δ = -768
Delta is less than zero, so there is no solution for the equation
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