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(1/2x)+x=777
We move all terms to the left:
(1/2x)+x-(777)=0
Domain of the equation: 2x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
(+1/2x)+x-777=0
We add all the numbers together, and all the variables
x+(+1/2x)-777=0
We get rid of parentheses
x+1/2x-777=0
We multiply all the terms by the denominator
x*2x-777*2x+1=0
Wy multiply elements
2x^2-1554x+1=0
a = 2; b = -1554; c = +1;
Δ = b2-4ac
Δ = -15542-4·2·1
Δ = 2414908
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{2414908}=\sqrt{4*603727}=\sqrt{4}*\sqrt{603727}=2\sqrt{603727}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1554)-2\sqrt{603727}}{2*2}=\frac{1554-2\sqrt{603727}}{4} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1554)+2\sqrt{603727}}{2*2}=\frac{1554+2\sqrt{603727}}{4} $
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