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x2-5.3x=-8.6
We move all terms to the left:
x2-5.3x-(-8.6)=0
We add all the numbers together, and all the variables
x^2-5.3x+8.6=0
a = 1; b = -5.3; c = +8.6;
Δ = b2-4ac
Δ = -5.32-4·1·8.6
Δ = -6.31
Delta is less than zero, so there is no solution for the equation
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