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3/x-13=10x
We move all terms to the left:
3/x-13-(10x)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
-10x+3/x-13=0
We multiply all the terms by the denominator
-10x*x-13*x+3=0
We add all the numbers together, and all the variables
-13x-10x*x+3=0
Wy multiply elements
-10x^2-13x+3=0
a = -10; b = -13; c = +3;
Δ = b2-4ac
Δ = -132-4·(-10)·3
Δ = 289
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{289}=17$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-13)-17}{2*-10}=\frac{-4}{-20} =1/5 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-13)+17}{2*-10}=\frac{30}{-20} =-1+1/2 $
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