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5x(-6x-1)=26
We move all terms to the left:
5x(-6x-1)-(26)=0
We multiply parentheses
-30x^2-5x-26=0
a = -30; b = -5; c = -26;
Δ = b2-4ac
Δ = -52-4·(-30)·(-26)
Δ = -3095
Delta is less than zero, so there is no solution for the equation
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