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2/5y-2/25=5/2y
We move all terms to the left:
2/5y-2/25-(5/2y)=0
Domain of the equation: 5y!=0
y!=0/5
y!=0
y∈R
Domain of the equation: 2y)!=0We add all the numbers together, and all the variables
y!=0/1
y!=0
y∈R
2/5y-(+5/2y)-2/25=0
We get rid of parentheses
2/5y-5/2y-2/25=0
We calculate fractions
(-40y^2)/500y^2+200y/500y^2+(-1250y)/500y^2=0
We multiply all the terms by the denominator
(-40y^2)+200y+(-1250y)=0
We get rid of parentheses
-40y^2+200y-1250y=0
We add all the numbers together, and all the variables
-40y^2-1050y=0
a = -40; b = -1050; c = 0;
Δ = b2-4ac
Δ = -10502-4·(-40)·0
Δ = 1102500
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}$$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1102500}=1050$$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1050)-1050}{2*-40}=\frac{0}{-80} =0 $$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1050)+1050}{2*-40}=\frac{2100}{-80} =-26+1/4 $
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