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2(4x-2)5x=-18
We move all terms to the left:
2(4x-2)5x-(-18)=0
We add all the numbers together, and all the variables
2(4x-2)5x+18=0
We multiply parentheses
40x^2-20x+18=0
a = 40; b = -20; c = +18;
Δ = b2-4ac
Δ = -202-4·40·18
Δ = -2480
Delta is less than zero, so there is no solution for the equation
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