8x2-72x=0

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Solution for 8x2-72x=0 equation:



8x^2-72x=0
a = 8; b = -72; c = 0;
Δ = b2-4ac
Δ = -722-4·8·0
Δ = 5184
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{5184}=72$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-72)-72}{2*8}=\frac{0}{16} =0 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-72)+72}{2*8}=\frac{144}{16} =9 $

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