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(x-13)x-3=-57
We move all terms to the left:
(x-13)x-3-(-57)=0
We add all the numbers together, and all the variables
(x-13)x+54=0
We multiply parentheses
x^2-13x+54=0
a = 1; b = -13; c = +54;
Δ = b2-4ac
Δ = -132-4·1·54
Δ = -47
Delta is less than zero, so there is no solution for the equation
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