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6x-5x^2=7
We move all terms to the left:
6x-5x^2-(7)=0
a = -5; b = 6; c = -7;
Δ = b2-4ac
Δ = 62-4·(-5)·(-7)
Δ = -104
Delta is less than zero, so there is no solution for the equation
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