135x-15x2=0

Solution for 135x-15x2=0 equation:

135x-15x^2=0

a = -15; b = 135; c = 0;
Δ = b2-4ac
Δ = 1352-4·(-15)·0
Δ = 18225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{18225}=135$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(135)-135}{2*-15}=\frac{-270}{-30}
=+9
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(135)+135}{2*-15}=\frac{0}{-30}
=0
$