y^2-72y=0

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Solution for y^2-72y=0 equation: 



y^2-72y=0

a = 1; b = -72; c = 0;
Δ = b2-4ac
Δ = -722-4·1·0
Δ = 5184
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{5184}=72$


$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-72)-72}{2*1}=\frac{0}{2}
=0
$


$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-72)+72}{2*1}=\frac{144}{2}
=72
$

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