115x-4x^2=0

Solution for 115x-4x^2=0 equation:

115x-4x^2=0

a = -4; b = 115; c = 0;
Δ = b2-4ac
Δ = 1152-4·(-4)·0
Δ = 13225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{13225}=115$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(115)-115}{2*-4}=\frac{-230}{-8}
=28+3/4
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(115)+115}{2*-4}=\frac{0}{-8}
=0
$