8x-4x^2=70

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Solution for 8x-4x^2=70 equation: 



8x-4x^2=70

We move all terms to the left:

8x-4x^2-(70)=0

a = -4; b = 8; c = -70;
Δ = b2-4ac
Δ = 82-4·(-4)·(-70)
Δ = -1056
Delta is less than zero, so there is no solution for the equation

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