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2x^2-3x=-19
We move all terms to the left:
2x^2-3x-(-19)=0
We add all the numbers together, and all the variables
2x^2-3x+19=0
a = 2; b = -3; c = +19;
Δ = b2-4ac
Δ = -32-4·2·19
Δ = -143
Delta is less than zero, so there is no solution for the equation
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