39x^2-156x=0

Solution for 39x^2-156x=0 equation:

39x^2-156x=0

a = 39; b = -156; c = 0;
Δ = b2-4ac
Δ = -1562-4·39·0
Δ = 24336
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{24336}=156$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-156)-156}{2*39}=\frac{0}{78}
=0
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-156)+156}{2*39}=\frac{312}{78}
=4
$