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(3/2x)+(8/x)=5
We move all terms to the left:
(3/2x)+(8/x)-(5)=0
Domain of the equation: 2x)!=0
x!=0/1
x!=0
x∈R
Domain of the equation: x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
(+3/2x)+(+8/x)-5=0
We get rid of parentheses
3/2x+8/x-5=0
We calculate fractions
3x/2x^2+16x/2x^2-5=0
We multiply all the terms by the denominator
3x+16x-5*2x^2=0
We add all the numbers together, and all the variables
19x-5*2x^2=0
Wy multiply elements
-10x^2+19x=0
a = -10; b = 19; c = 0;
Δ = b2-4ac
Δ = 192-4·(-10)·0
Δ = 361
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{361}=19$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(19)-19}{2*-10}=\frac{-38}{-20} =1+9/10 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(19)+19}{2*-10}=\frac{0}{-20} =0 $
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