9x2-24x+16=9

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Solution for 9x2-24x+16=9 equation:



9x^2-24x+16=9
We move all terms to the left:
9x^2-24x+16-(9)=0
We add all the numbers together, and all the variables
9x^2-24x+7=0
a = 9; b = -24; c = +7;
Δ = b2-4ac
Δ = -242-4·9·7
Δ = 324
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{324}=18$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-24)-18}{2*9}=\frac{6}{18} =1/3 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-24)+18}{2*9}=\frac{42}{18} =2+1/3 $

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