(-x^2+9)/(2x^2-18)

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Solution for (-x^2+9)/(2x^2-18) equation: 


D( x )

2*x^2-18 = 0

2*x^2-18 = 0

2*x^2-18 = 0

2*x^2 = 18 // : 2

x^2 = 9

x^2 = 9 // ^ 1/2

abs(x) = 3

x = 3 or x = -3

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

((-x)^2+9)/(2*x^2-18) = 0

(x^2+9)/(2*x^2-18) = 0

1*x^2 = -9 // : 1

x^2 = -9

x belongs to the empty set

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