1/9x^2-1=-3/4

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Solution for 1/9x^2-1=-3/4 equation: 


x in (-oo:+oo)

(1/9)*x^2-1 = -3/4 // + -3/4

(1/9)*x^2-(-3/4)-1 = 0

(1/9)*x^2+3/4-1 = 0

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

x^2 = 9/4

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

abs(x) = 3/2

x = 3/2 or x = -3/2

x in { 3/2, -3/2 }

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