Question

What is the simplest form of square root 1,764

Answer 1

`\bf √(1764)~~ \begin{cases} 1764=&2\cdot 2\cdot 3\cdot 3\cdot 7\cdot 7\\ &2^2\cdot 3^2\cdot 7^2\\ &(2\cdot 3\cdot 7)^2\\ &42^2 \end{cases}\implies √(42^2)\implies 42`