The answer to the blank in the equation $ \_\_^2 = 16 $ is $ 4 $ or $ -4 $. Thus, the complete forms can be either $ 4^2 = 16 $ or $ (-4)^2 = 16 $.

__^2 = 16

To solve the equation $x^{2} = 16$ , you can take the square root of both sides.

This gives: $x = \pm 4$

So the solutions are $x = 4$ and $x = - 4$ .

whats the answer to the blank

The answer to the blank in the equation $Missing open brace for subscript$ is $4$ or $- 4$ . Thus, the complete forms can be either $4^{2} = 16$ or $(- 4)^{2} = 16$ .