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x^2-7x=-65
We move all terms to the left:
x^2-7x-(-65)=0
We add all the numbers together, and all the variables
x^2-7x+65=0
a = 1; b = -7; c = +65;
Δ = b2-4ac
Δ = -72-4·1·65
Δ = -211
Delta is less than zero, so there is no solution for the equation
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