5x^2+10x=60

Solution for 5x^2+10x=60 equation:

5x^2+10x=60

We move all terms to the left:

5x^2+10x-(60)=0

a = 5; b = 10; c = -60;
Δ = b2-4ac
Δ = 102-4·5·(-60)
Δ = 1300
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{1300}=\sqrt{100*13}=\sqrt{100}*\sqrt{13}=10\sqrt{13}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(10)-10\sqrt{13}}{2*5}=\frac{-10-10\sqrt{13}}{10}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(10)+10\sqrt{13}}{2*5}=\frac{-10+10\sqrt{13}}{10}
$