x²=16 x?

To solve the equation \( x^2 = 16 \), you can take the square root of both sides. Remember that when you take the square root, you need to consider both the positive and negative roots.

So:

\[ x = \pm \sqrt{16} \]

This gives you:

\[ x = \pm 4 \]

Therefore, the solutions to the equation \( x^2 = 16 \) are:

\[ x = 4 \quad \text{and} \quad x = -4 \]