The Square Root of Numbers.
[tex]\begin{gathered} \text{The square of 64 is written mathematically as }\sqrt[]{64} \\ \sqrt[]{64}=\sqrt[]{(8\times8})=8\text{ or }\sqrt[]{(-8\times-8)}=\text{ -8} \end{gathered}[/tex]The correct answer for the square root of 64 is 8 or -8 (option A)