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D( x )
x+2 = 0
4*x+8 = 0
x+2 = 0
x+2 = 0
x+2 = 0 // - 2
x = -2
4*x+8 = 0
4*x+8 = 0
4*x+8 = 0 // - 8
4*x = -8 // : 4
x = -8/4
x = -2
x in (-oo:-2) U (-2:+oo)
-(5/(x+2)) = 2-(3/(4*x+8)) // - 2-(3/(4*x+8))
3/(4*x+8)-(5/(x+2))-2 = 0
3/(4*x+8)-5*(x+2)^-1-2 = 0
3/(4*x+8)-5/(x+2)-2 = 0
(-5*(4*x+8))/((x+2)*(4*x+8))+(3*(x+2))/((x+2)*(4*x+8))+(-2*(x+2)*(4*x+8))/((x+2)*(4*x+8)) = 0
3*(x+2)-5*(4*x+8)-2*(x+2)*(4*x+8) = 0
-8*x^2-17*x-32*x-34-32 = 0
-8*x^2-49*x-66 = 0
-8*x^2-49*x-66 = 0
-1*(8*x^2+49*x+66) = 0
8*x^2+49*x+66 = 0
DELTA = 49^2-(4*8*66)
DELTA = 289
DELTA > 0
x = (289^(1/2)-49)/(2*8) or x = (-289^(1/2)-49)/(2*8)
x = -2 or x = -33/8
-1*(x+33/8)*(x+2) = 0
(-1*(x+33/8)*(x+2))/((x+2)*(4*x+8)) = 0
(-1*(x+33/8)*(x+2))/((x+2)*(4*x+8)) = 0 // * (x+2)*(4*x+8)
-1*(x+33/8)*(x+2) = 0
( x+2 )
x+2 = 0 // - 2
x = -2
( x+33/8 )
x+33/8 = 0 // - 33/8
x = -33/8
x in { -2}
x = -33/8
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