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D( x )
x+2 = 0
x = 0
x+2 = 0
x+2 = 0
x+2 = 0 // - 2
x = -2
x = 0
x = 0
x in (-oo:-2) U (-2:0) U (0:+oo)
1/(x+2)+1/x = 1/5 // - 1/5
1/(x+2)+1/x-(1/5) = 0
1/(x+2)+1/x-1/5 = 0
(1*5*x)/(5*x*(x+2))+(1*5*(x+2))/(5*x*(x+2))+(-1*x*(x+2))/(5*x*(x+2)) = 0
1*5*(x+2)-1*x*(x+2)+1*5*x = 0
10*x-x^2-2*x+10 = 0
8*x-x^2+10 = 0
8*x-x^2+10 = 0
8*x-x^2+10 = 0
DELTA = 8^2-(-1*4*10)
DELTA = 104
DELTA > 0
x = (104^(1/2)-8)/(-1*2) or x = (-104^(1/2)-8)/(-1*2)
x = (2*26^(1/2)-8)/(-2) or x = (-2*26^(1/2)-8)/(-2)
(x-((2*26^(1/2)-8)/(-2)))*(x-((-2*26^(1/2)-8)/(-2))) = 0
((x-((2*26^(1/2)-8)/(-2)))*(x-((-2*26^(1/2)-8)/(-2))))/(5*x*(x+2)) = 0
((x-((2*26^(1/2)-8)/(-2)))*(x-((-2*26^(1/2)-8)/(-2))))/(5*x*(x+2)) = 0 // * 5*x*(x+2)
(x-((2*26^(1/2)-8)/(-2)))*(x-((-2*26^(1/2)-8)/(-2))) = 0
( x-((-2*26^(1/2)-8)/(-2)) )
x-((-2*26^(1/2)-8)/(-2)) = 0 // + (-2*26^(1/2)-8)/(-2)
x = (-2*26^(1/2)-8)/(-2)
( x-((2*26^(1/2)-8)/(-2)) )
x-((2*26^(1/2)-8)/(-2)) = 0 // + (2*26^(1/2)-8)/(-2)
x = (2*26^(1/2)-8)/(-2)
x in { (-2*26^(1/2)-8)/(-2), (2*26^(1/2)-8)/(-2) }
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