Question

quanto e 15²³:15²¹=?​

Answer 1

$b) {15}^{23} \div {15}^{21} = \\ {15}^{23 - 21} \\ {15}^{2} = 225$

$c)( {7}^{2} ) {}^{2} = \\ 7 {}^{2 \times 2} \\ {7}^{4} = 2401$