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0=x^2+15x+60
We move all terms to the left:
0-(x^2+15x+60)=0
We add all the numbers together, and all the variables
-(x^2+15x+60)=0
We get rid of parentheses
-x^2-15x-60=0
We add all the numbers together, and all the variables
-1x^2-15x-60=0
a = -1; b = -15; c = -60;
Δ = b2-4ac
Δ = -152-4·(-1)·(-60)
Δ = -15
Delta is less than zero, so there is no solution for the equation
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