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x-10+1/2x+5+2x-30=180
We move all terms to the left:
x-10+1/2x+5+2x-30-(180)=0
Domain of the equation: 2x!=0We add all the numbers together, and all the variables
x!=0/2
x!=0
x∈R
3x+1/2x-215=0
We multiply all the terms by the denominator
3x*2x-215*2x+1=0
Wy multiply elements
6x^2-430x+1=0
a = 6; b = -430; c = +1;
Δ = b2-4ac
Δ = -4302-4·6·1
Δ = 184876
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{184876}=\sqrt{4*46219}=\sqrt{4}*\sqrt{46219}=2\sqrt{46219}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-430)-2\sqrt{46219}}{2*6}=\frac{430-2\sqrt{46219}}{12} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-430)+2\sqrt{46219}}{2*6}=\frac{430+2\sqrt{46219}}{12} $
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