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x-4/x-1=12/3-x+1
We move all terms to the left:
x-4/x-1-(12/3-x+1)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: 3-x+1)!=0We add all the numbers together, and all the variables
We move all terms containing x to the left, all other terms to the right
-x+1)!=-3
x∈R
x-4/x-(-1x+5)-1=0
We get rid of parentheses
x-4/x+1x-5-1=0
We multiply all the terms by the denominator
x*x+1x*x-5*x-1*x-4=0
We add all the numbers together, and all the variables
-6x+x*x+1x*x-4=0
Wy multiply elements
x^2+x^2-6x-4=0
We add all the numbers together, and all the variables
2x^2-6x-4=0
a = 2; b = -6; c = -4;
Δ = b2-4ac
Δ = -62-4·2·(-4)
Δ = 68
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{68}=\sqrt{4*17}=\sqrt{4}*\sqrt{17}=2\sqrt{17}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-6)-2\sqrt{17}}{2*2}=\frac{6-2\sqrt{17}}{4} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-6)+2\sqrt{17}}{2*2}=\frac{6+2\sqrt{17}}{4} $
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