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5x-2x^2=10
We move all terms to the left:
5x-2x^2-(10)=0
a = -2; b = 5; c = -10;
Δ = b2-4ac
Δ = 52-4·(-2)·(-10)
Δ = -55
Delta is less than zero, so there is no solution for the equation
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