1/4x^2-9

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Solution for 1/4x^2-9 equation: 


x in (-oo:+oo)

(1/4)*x^2-9 = 0

1/4*x^2 = 9 // : 1/4

x^2 = 36

x^2 = 36 // ^ 1/2

abs(x) = 6

x = 6 or x = -6

x in { 6, -6 }

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