Solve $$$\left(y - 6\right)^{2} + 81 = 102$$$ for $$$y$$$ (real roots)

The calculator will try to solve the equation $$$\left(y - 6\right)^{2} + 81 = 102$$$ for $$$y$$$ (find the real roots) on the interval $$$\left(-\infty, \infty\right)$$$.

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