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2x(-4x)=8
We move all terms to the left:
2x(-4x)-(8)=0
We multiply parentheses
-8x^2-8=0
a = -8; b = 0; c = -8;
Δ = b2-4ac
Δ = 02-4·(-8)·(-8)
Δ = -256
Delta is less than zero, so there is no solution for the equation
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