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X+130/X+170=1
We move all terms to the left:
X+130/X+170-(1)=0
Domain of the equation: X!=0We add all the numbers together, and all the variables
X∈R
X+130/X+169=0
We multiply all the terms by the denominator
X*X+169*X+130=0
We add all the numbers together, and all the variables
169X+X*X+130=0
Wy multiply elements
X^2+169X+130=0
a = 1; b = 169; c = +130;
Δ = b2-4ac
Δ = 1692-4·1·130
Δ = 28041
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{-(169)-\sqrt{28041}}{2*1}=\frac{-169-\sqrt{28041}}{2} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(169)+\sqrt{28041}}{2*1}=\frac{-169+\sqrt{28041}}{2} $
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