X^2-1=4-x^2/4

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


x in (-oo:+oo)

X^2-1 = 4-((x^2)/4) // - 4-((x^2)/4)

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

1/4*x^2 = -(X^2-5) // : 1/4

x^2 = 4*(5-X^2)

x^2 = 4*(5-X^2) // ^ 1/2

abs(x) = 2*(5-X^2)^(1/2)

x = 2*(5-X^2)^(1/2) or x = -(2*(5-X^2)^(1/2))

x in { 2*(5-X^2)^(1/2), -(2*(5-X^2)^(1/2)) }

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