18x2+15x=0

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Solution for 18x2+15x=0 equation:



18x^2+15x=0
a = 18; b = 15; c = 0;
Δ = b2-4ac
Δ = 152-4·18·0
Δ = 225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{225}=15$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(15)-15}{2*18}=\frac{-30}{36} =-5/6 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+15}{2*18}=\frac{0}{36} =0 $

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