Question

What should be multiplied to $7200$ to make a perfect square?

• A. $5$
• B. $3$
• C. $2$
• D. $4$

Answer 1

The correct option is C $2$

$7200=\underset{–}{2\times 2}\times \underset{–}{2\times 2}\times 2\times \underset{–}{5\times 5}\times \underset{–}{3\times 3}$
$7200$ is not a perfect square. To make a perfect square we must multiply by $2$.