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1/2y+2=5y=
We move all terms to the left:
1/2y+2-(5y)=0
Domain of the equation: 2y!=0We add all the numbers together, and all the variables
y!=0/2
y!=0
y∈R
-5y+1/2y+2=0
We multiply all the terms by the denominator
-5y*2y+2*2y+1=0
Wy multiply elements
-10y^2+4y+1=0
a = -10; b = 4; c = +1;
Δ = b2-4ac
Δ = 42-4·(-10)·1
Δ = 56
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{56}=\sqrt{4*14}=\sqrt{4}*\sqrt{14}=2\sqrt{14}$$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-2\sqrt{14}}{2*-10}=\frac{-4-2\sqrt{14}}{-20} $$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+2\sqrt{14}}{2*-10}=\frac{-4+2\sqrt{14}}{-20} $
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