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x^2-10x=-105
We move all terms to the left:
x^2-10x-(-105)=0
We add all the numbers together, and all the variables
x^2-10x+105=0
a = 1; b = -10; c = +105;
Δ = b2-4ac
Δ = -102-4·1·105
Δ = -320
Delta is less than zero, so there is no solution for the equation
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