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

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


D( x )

3-x = 0

3-x = 0

3-x = 0

3-x = 0 // - 3

-x = -3 // * -1

x = 3

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

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

2*x^2 = 9 // : 2

x^2 = 9/2

x^2 = 9/2 // ^ 1/2

abs(x) = (9/2)^(1/2)

x = (9/2)^(1/2) or x = -(9/2)^(1/2)

x in { (9/2)^(1/2), -(9/2)^(1/2) }

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