9x^2+3x=6

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Solution for 9x^2+3x=6 equation:



9x^2+3x=6
We move all terms to the left:
9x^2+3x-(6)=0
a = 9; b = 3; c = -6;
Δ = b2-4ac
Δ = 32-4·9·(-6)
Δ = 225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{225}=15$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-15}{2*9}=\frac{-18}{18} =-1 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+15}{2*9}=\frac{12}{18} =2/3 $

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