63-28x^2=0

Solution for 63-28x^2=0 equation:

63-28x^2=0

a = -28; b = 0; c = +63;
Δ = b2-4ac
Δ = 02-4·(-28)·63
Δ = 7056
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{7056}=84$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-84}{2*-28}=\frac{-84}{-56}
=1+1/2
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+84}{2*-28}=\frac{84}{-56}
=-1+1/2
$