-.00635x^2+4x=-60

Solution for -.00635x^2+4x=-60 equation:

-.00635x^2+4x=-60

We move all terms to the left:

-.00635x^2+4x-(-60)=0

We add all the numbers together, and all the variables

-0.00635x^2+4x+60=0

a = -0.00635; b = 4; c = +60;
Δ = b2-4ac
Δ = 42-4·(-0.00635)·60
Δ = 17.524
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-\sqrt{17.524}}{2*-0.00635}=\frac{-4-\sqrt{17.524}}{-0.0127}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+\sqrt{17.524}}{2*-0.00635}=\frac{-4+\sqrt{17.524}}{-0.0127}
$