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6/11x+9/x=1
We move all terms to the left:
6/11x+9/x-(1)=0
Domain of the equation: 11x!=0
x!=0/11
x!=0
x∈R
Domain of the equation: x!=0We calculate fractions
x∈R
6x/11x^2+99x/11x^2-1=0
We multiply all the terms by the denominator
6x+99x-1*11x^2=0
We add all the numbers together, and all the variables
105x-1*11x^2=0
Wy multiply elements
-11x^2+105x=0
a = -11; b = 105; c = 0;
Δ = b2-4ac
Δ = 1052-4·(-11)·0
Δ = 11025
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{11025}=105$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(105)-105}{2*-11}=\frac{-210}{-22} =9+6/11 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(105)+105}{2*-11}=\frac{0}{-22} =0 $
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