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x^2-2x=-50
We move all terms to the left:
x^2-2x-(-50)=0
We add all the numbers together, and all the variables
x^2-2x+50=0
a = 1; b = -2; c = +50;
Δ = b2-4ac
Δ = -22-4·1·50
Δ = -196
Delta is less than zero, so there is no solution for the equation
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