(7x^2/y)+9

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Solution for (7x^2/y)+9 equation: 


x in (-oo:+oo)

(7*x^2)/y+9 = 0

7*x^2*y^-1 = -9 // : 7*y^-1

x^2 = -9/(7*y^-1)

x^2 = -9/(7*y^-1) // ^ 1/2

abs(x) = ((-9)^(1/2))/(7^(1/2)*y^(-1/2))

x = ((-9)^(1/2))/(7^(1/2)*y^(-1/2)) or x = -(((-9)^(1/2))/(7^(1/2)*y^(-1/2)))

x in { ((-9)^(1/2))/(7^(1/2)*y^(-1/2)), -(((-9)^(1/2))/(7^(1/2)*y^(-1/2))) }

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