6x(2x-1)=9x

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Solution for 6x(2x-1)=9x equation:



6x(2x-1)=9x
We move all terms to the left:
6x(2x-1)-(9x)=0
We add all the numbers together, and all the variables
-9x+6x(2x-1)=0
We multiply parentheses
12x^2-9x-6x=0
We add all the numbers together, and all the variables
12x^2-15x=0
a = 12; b = -15; c = 0;
Δ = b2-4ac
Δ = -152-4·12·0
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{-(-15)-15}{2*12}=\frac{0}{24} =0 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-15)+15}{2*12}=\frac{30}{24} =1+1/4 $

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