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3x=13/5x=2
We move all terms to the left:
3x-(13/5x)=0
Domain of the equation: 5x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
3x-(+13/5x)=0
We get rid of parentheses
3x-13/5x=0
We multiply all the terms by the denominator
3x*5x-13=0
Wy multiply elements
15x^2-13=0
a = 15; b = 0; c = -13;
Δ = b2-4ac
Δ = 02-4·15·(-13)
Δ = 780
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{780}=\sqrt{4*195}=\sqrt{4}*\sqrt{195}=2\sqrt{195}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-2\sqrt{195}}{2*15}=\frac{0-2\sqrt{195}}{30} =-\frac{2\sqrt{195}}{30} =-\frac{\sqrt{195}}{15} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+2\sqrt{195}}{2*15}=\frac{0+2\sqrt{195}}{30} =\frac{2\sqrt{195}}{30} =\frac{\sqrt{195}}{15} $
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