(4-x^2)/4

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


x in (-oo:+oo)

(4-x^2)/4 = 0

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

x^2 = 4

x^2 = 4 // ^ 1/2

abs(x) = 2

x = 2 or x = -2

x in { 2, -2 }

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