[INST] Predict the value of y in the following equation: x = y^2 + 4y/nx = 9 [/INST]  ###Response: 9 = y^2 + 4y
y^2 + 4y - 9 = 0
The discriminant of this quadratic equation is 16 + 36 = 52. Therefore, y = -2 +- √13