22r^2+18r=0

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Solution for 22r^2+18r=0 equation:



22r^2+18r=0
a = 22; b = 18; c = 0;
Δ = b2-4ac
Δ = 182-4·22·0
Δ = 324
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{324}=18$
$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(18)-18}{2*22}=\frac{-36}{44} =-9/11 $
$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(18)+18}{2*22}=\frac{0}{44} =0 $

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