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D( x )
x^2+5*x-24 = 0
x^2 = 0
x^2+5*x-24 = 0
x^2+5*x-24 = 0
x^2+5*x-24 = 0
DELTA = 5^2-(-24*1*4)
DELTA = 121
DELTA > 0
x = (121^(1/2)-5)/(1*2) or x = (-121^(1/2)-5)/(1*2)
x = 3 or x = -8
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:-8) U (-8:0) U (0:3) U (3:+oo)
(((x^2-9)/(x^2))*(x^2-3))/(x^2+5*x-24) = 0
((x^2-9)*(x^2-3))/(x^2*(x^2+5*x-24)) = 0
x^2+5*x-24 = 0
x^2+5*x-24 = 0
DELTA = 5^2-(-24*1*4)
DELTA = 121
DELTA > 0
x = (121^(1/2)-5)/(1*2) or x = (-121^(1/2)-5)/(1*2)
x = 3 or x = -8
(x+8)*(x-3) = 0
((x^2-9)*(x^2-3))/(x^2*(x+8)*(x-3)) = 0
( x^2-3 )
1*x^2 = 3 // : 1
x^2 = 3
x^2 = 3 // ^ 1/2
abs(x) = 3^(1/2)
x = 3^(1/2) or x = -3^(1/2)
( x^2-9 )
1*x^2 = 9 // : 1
x^2 = 9
x^2 = 9 // ^ 1/2
abs(x) = 3
x = 3 or x = -3
x in { 3}
x in { 3^(1/2), -3^(1/2), -3 }
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