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x+19=1/2x+29
We move all terms to the left:
x+19-(1/2x+29)=0
Domain of the equation: 2x+29)!=0We get rid of parentheses
x∈R
x-1/2x-29+19=0
We multiply all the terms by the denominator
x*2x-29*2x+19*2x-1=0
Wy multiply elements
2x^2-58x+38x-1=0
We add all the numbers together, and all the variables
2x^2-20x-1=0
a = 2; b = -20; c = -1;
Δ = b2-4ac
Δ = -202-4·2·(-1)
Δ = 408
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{408}=\sqrt{4*102}=\sqrt{4}*\sqrt{102}=2\sqrt{102}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-20)-2\sqrt{102}}{2*2}=\frac{20-2\sqrt{102}}{4} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-20)+2\sqrt{102}}{2*2}=\frac{20+2\sqrt{102}}{4} $
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