15y*1.5y-29.5y=0

Solution for 15y*1.5y-29.5y=0 equation:

15y*1.5y-29.5y=0

We add all the numbers together, and all the variables

-29.5y+15y*1.5y=0

Wy multiply elements

15y^2-29.5y=0

a = 15; b = -29.5; c = 0;
Δ = b2-4ac
Δ = -29.52-4·15·0
Δ = 870.25
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-29.5)-\sqrt{870.25}}{2*15}=\frac{29.5-\sqrt{870.25}}{30}
$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-29.5)+\sqrt{870.25}}{2*15}=\frac{29.5+\sqrt{870.25}}{30}
$