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m^2-8m=-60
We move all terms to the left:
m^2-8m-(-60)=0
We add all the numbers together, and all the variables
m^2-8m+60=0
a = 1; b = -8; c = +60;
Δ = b2-4ac
Δ = -82-4·1·60
Δ = -176
Delta is less than zero, so there is no solution for the equation
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