2(3x-12)-5x=-3x(x-12)

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Solution for 2(3x-12)-5x=-3x(x-12) equation:



2(3x-12)-5x=-3x(x-12)
We move all terms to the left:
2(3x-12)-5x-(-3x(x-12))=0
We add all the numbers together, and all the variables
-5x+2(3x-12)-(-3x(x-12))=0
We multiply parentheses
-5x+6x-(-3x(x-12))-24=0
We calculate terms in parentheses: -(-3x(x-12)), so:
-3x(x-12)
We multiply parentheses
-3x^2+36x
Back to the equation:
-(-3x^2+36x)
We add all the numbers together, and all the variables
-(-3x^2+36x)+x-24=0
We get rid of parentheses
3x^2-36x+x-24=0
We add all the numbers together, and all the variables
3x^2-35x-24=0
a = 3; b = -35; c = -24;
Δ = b2-4ac
Δ = -352-4·3·(-24)
Δ = 1513
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-35)-\sqrt{1513}}{2*3}=\frac{35-\sqrt{1513}}{6} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-35)+\sqrt{1513}}{2*3}=\frac{35+\sqrt{1513}}{6} $

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