Question

please give me answer this question

Answer 1

2^4+5-8=2^1=2. By a^m * a^n =a^m+n and
a^m /a^n =a^m-n

Answer 2

$(2 {}^{4} \times 2 {}^{5} ) \div 2 {}^{8}$
=
$2 {}^{4 + 5} \div 2 {}^{8}$
=
$2 {}^{9} \div 2 {}^{8}$
=
$2 {}^{9 - 8}$
= 2

HAVE A GREAT DAY