(x^2-9)/(x^2)/(x^2-3x)/(x^2+2x-15)

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Solution for (x^2-9)/(x^2)/(x^2-3x)/(x^2+2x-15) equation: 


D( x )

x^2-(3*x) = 0

x^2+2*x-15 = 0

x^2 = 0

x^2-(3*x) = 0

x^2-(3*x) = 0

x^2-3*x = 0

x^2-3*x = 0

DELTA = (-3)^2-(0*1*4)

DELTA = 9

DELTA > 0

x = (9^(1/2)+3)/(1*2) or x = (3-9^(1/2))/(1*2)

x = 3 or x = 0

x^2+2*x-15 = 0

x^2+2*x-15 = 0

x^2+2*x-15 = 0

DELTA = 2^2-(-15*1*4)

DELTA = 64

DELTA > 0

x = (64^(1/2)-2)/(1*2) or x = (-64^(1/2)-2)/(1*2)

x = 3 or x = -5

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

x in (-oo:-5) U (-5:0) U (0:3) U (3:+oo)

(((x^2-9)/(x^2))/(x^2-(3*x)))/(x^2+2*x-15) = 0

(((x^2-9)/(x^2))/(x^2-3*x))/(x^2+2*x-15) = 0

(x^2-9)/(x^2*(x^2-3*x)*(x^2+2*x-15)) = 0

x^2-3*x = 0

x*(x-3) = 0

x-3 = 0 // + 3

x = 3

x*(x-3) = 0

x^2+2*x-15 = 0

x^2+2*x-15 = 0

DELTA = 2^2-(-15*1*4)

DELTA = 64

DELTA > 0

x = (64^(1/2)-2)/(1*2) or x = (-64^(1/2)-2)/(1*2)

x = 3 or x = -5

(x+5)*(x-3) = 0

(x^2-9)/(x*x^2*(x-3)^2*(x+5)) = 0

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 = -3

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