x^2-7/w=y

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Solution for x^2-7/w=y equation: 


x in (-oo:+oo)

x^2-(7/w) = y // - y

x^2-(7/w)-y = 0

x^2-7*w^-1-y = 0

1*x^2 = -(-7*w^-1-y) // : 1

x^2 = y-(-7*w^-1)

x^2 = 7*w^-1+y // ^ 1/2

abs(x) = (7*w^-1+y)^(1/2)

x = (7*w^-1+y)^(1/2) or x = -(7*w^-1+y)^(1/2)

x in { (7*w^-1+y)^(1/2), -(7*w^-1+y)^(1/2) }

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