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-15x^2+2x=12
We move all terms to the left:
-15x^2+2x-(12)=0
a = -15; b = 2; c = -12;
Δ = b2-4ac
Δ = 22-4·(-15)·(-12)
Δ = -716
Delta is less than zero, so there is no solution for the equation
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