Question

$(\frac{4}{5}) ^{2}=$

Answer 1

   
[tex]\displaystyle\\ \left(\frac{4}{5}\right) ^{2}= \frac{4^2}{5^2}=\boxed{\frac{16}{25}}[/tex]

Answer 2

Formula : (a supra b)²=a² supra b²
(4 supra 5)²=4² supra 5²=16 supra 25 !