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x-4=(1/3)(6x-54)
We move all terms to the left:
x-4-((1/3)(6x-54))=0
Domain of the equation: 3)(6x-54))!=0We add all the numbers together, and all the variables
x∈R
x-((+1/3)(6x-54))-4=0
We multiply parentheses ..
-((+6x^2+1/3*-54))+x-4=0
We multiply all the terms by the denominator
-((+6x^2+1+x*3*-54))-4*3*-54))=0
We calculate terms in parentheses: -((+6x^2+1+x*3*-54)), so:We add all the numbers together, and all the variables
(+6x^2+1+x*3*-54)
We get rid of parentheses
6x^2+x*3*+1-54
We add all the numbers together, and all the variables
6x^2+x*3*-53
Wy multiply elements
6x^2+3x^2-53
We add all the numbers together, and all the variables
9x^2-53
Back to the equation:
-(9x^2-53)
-(9x^2-53)=0
We get rid of parentheses
-9x^2+53=0
a = -9; b = 0; c = +53;
Δ = b2-4ac
Δ = 02-4·(-9)·53
Δ = 1908
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1908}=\sqrt{36*53}=\sqrt{36}*\sqrt{53}=6\sqrt{53}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-6\sqrt{53}}{2*-9}=\frac{0-6\sqrt{53}}{-18} =-\frac{6\sqrt{53}}{-18} =-\frac{\sqrt{53}}{-3} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+6\sqrt{53}}{2*-9}=\frac{0+6\sqrt{53}}{-18} =\frac{6\sqrt{53}}{-18} =\frac{\sqrt{53}}{-3} $
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