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D( x )
x+2 = 0
x+3 = 0
x+2 = 0
x+2 = 0
x+2 = 0 // - 2
x = -2
x+3 = 0
x+3 = 0
x+3 = 0 // - 3
x = -3
x in (-oo:-3) U (-3:-2) U (-2:+oo)
1/(x+2)+1/(x+3)-2 = 0
(1*(x+3))/((x+2)*(x+3))+(1*(x+2))/((x+2)*(x+3))+(-2*(x+2)*(x+3))/((x+2)*(x+3)) = 0
1*(x+3)+1*(x+2)-2*(x+2)*(x+3) = 0
2*x-2*x^2-10*x-12+5 = 0
-2*x^2-8*x-7 = 0
-2*x^2-8*x-7 = 0
-1*(2*x^2+8*x+7) = 0
2*x^2+8*x+7 = 0
DELTA = 8^2-(2*4*7)
DELTA = 8
DELTA > 0
x = (8^(1/2)-8)/(2*2) or x = (-8^(1/2)-8)/(2*2)
x = (2*2^(1/2)-8)/4 or x = (-2*2^(1/2)-8)/4
-1*(x-((-2*2^(1/2)-8)/4))*(x-((2*2^(1/2)-8)/4)) = 0
(-1*(x-((-2*2^(1/2)-8)/4))*(x-((2*2^(1/2)-8)/4)))/((x+2)*(x+3)) = 0
(-1*(x-((-2*2^(1/2)-8)/4))*(x-((2*2^(1/2)-8)/4)))/((x+2)*(x+3)) = 0 // * (x+2)*(x+3)
-1*(x-((-2*2^(1/2)-8)/4))*(x-((2*2^(1/2)-8)/4)) = 0
( x-((-2*2^(1/2)-8)/4) )
x-((-2*2^(1/2)-8)/4) = 0 // + (-2*2^(1/2)-8)/4
x = (-2*2^(1/2)-8)/4
( x-((2*2^(1/2)-8)/4) )
x-((2*2^(1/2)-8)/4) = 0 // + (2*2^(1/2)-8)/4
x = (2*2^(1/2)-8)/4
x in { (-2*2^(1/2)-8)/4, (2*2^(1/2)-8)/4 }
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