9p^2-7p=0

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Solution for 9p^2-7p=0 equation: 



9p^2-7p=0

a = 9; b = -7; c = 0;
Δ = b2-4ac
Δ = -72-4·9·0
Δ = 49
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$p_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$p_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{49}=7$


$p_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-7}{2*9}=\frac{0}{18}
=0
$


$p_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+7}{2*9}=\frac{14}{18}
=7/9
$

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