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9/5x-2=2/x+2
We move all terms to the left:
9/5x-2-(2/x+2)=0
Domain of the equation: 5x!=0
x!=0/5
x!=0
x∈R
Domain of the equation: x+2)!=0We get rid of parentheses
x∈R
9/5x-2/x-2-2=0
We calculate fractions
9x/5x^2+(-10x)/5x^2-2-2=0
We add all the numbers together, and all the variables
9x/5x^2+(-10x)/5x^2-4=0
We multiply all the terms by the denominator
9x+(-10x)-4*5x^2=0
Wy multiply elements
-20x^2+9x+(-10x)=0
We get rid of parentheses
-20x^2+9x-10x=0
We add all the numbers together, and all the variables
-20x^2-1x=0
a = -20; b = -1; c = 0;
Δ = b2-4ac
Δ = -12-4·(-20)·0
Δ = 1
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{1}=1$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-1}{2*-20}=\frac{0}{-40} =0 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+1}{2*-20}=\frac{2}{-40} =-1/20 $
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