8m(9m+5)=0

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Solution for 8m(9m+5)=0 equation:



8m(9m+5)=0
We multiply parentheses
72m^2+40m=0
a = 72; b = 40; c = 0;
Δ = b2-4ac
Δ = 402-4·72·0
Δ = 1600
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1600}=40$
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(40)-40}{2*72}=\frac{-80}{144} =-5/9 $
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(40)+40}{2*72}=\frac{0}{144} =0 $

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