(1-x/x+2)*(x^2/4-1)

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Solution for (1-x/x+2)*(x^2/4-1) equation: 


D( x )

x = 0

x = 0

x = 0

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

(1-(x/x)+2)*((x^2)/4-1) = 0

(1-1+2)*((x^2)/4-1) = 0

2*(1/4*x^2-1) = 0

1/4*x^2 = 1 // : 1/4

x^2 = 4

x^2 = 4 // ^ 1/2

abs(x) = 2

x = 2 or x = -2

x in { 2, -2 }

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