X^2-1/9x^2=8

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Solution for X^2-1/9x^2=8 equation: 


x in (-oo:+oo)

X^2-((1/9)*x^2) = 8 // - 8

X^2-((1/9)*x^2)-8 = 0

X^2+(-1/9)*x^2-8 = 0

-1/9*x^2 = -(X^2-8) // : -1/9

x^2 = -9*(8-X^2)

x^2 = -9*(8-X^2) // ^ 1/2

abs(x) = (-9)^(1/2)*(8-X^2)^(1/2)

x = (-9)^(1/2)*(8-X^2)^(1/2) or x = -((-9)^(1/2)*(8-X^2)^(1/2))

x in { (-9)^(1/2)*(8-X^2)^(1/2), -((-9)^(1/2)*(8-X^2)^(1/2)) }

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