Question

Find the square of rational number: $\frac{17\times 18}{2\times 9}$

• A. $144$
• B. $81$
• C. $289$
• D. $324$

Answer 1

The correct option is C $289$

Square of rational number $=(\frac{17\times 18}{2\times 9}{)}^2$

$=\frac{289\times 324}{4\times 81}$
$=289$