Question

simplify √256√16÷? =16​

Answer 1

$\huge\bold{Solution-:}$

√256 =16

at least that's the positive square root

− 16 is also a square root of 256

16²= (−16)² = 256

By definition, the principal square root of a number is the positive square root. The term "the square root" is commonly used to refer to the principal (positive) root though there are usually two roots.

√x² = | x |