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x(x+7)=-60
We move all terms to the left:
x(x+7)-(-60)=0
We add all the numbers together, and all the variables
x(x+7)+60=0
We multiply parentheses
x^2+7x+60=0
a = 1; b = 7; c = +60;
Δ = b2-4ac
Δ = 72-4·1·60
Δ = -191
Delta is less than zero, so there is no solution for the equation
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