Jawapan

2015-03-21T11:11:06+08:00
= (5^{2} ÷ 25^{2})^{-2}
= (5^{2} ÷ 5^{4})^{-2}      <------ tukar 25 menjadi 5²

= (5^{2-4})^{-2}            <------ 5 digabungkan
= (5^{-2})^{-2}
= 5^{(-2)(-2)}
= 5^{4}




1 5 1