Question

A- (-9)^8÷(-9)^3=
B- 10^5 ÷10=
C- (-2)^9÷(-2)^2=

Answer 1

$a) {( - 9)}^{8} \div {( -9 )}^{3} = {( - 9)}^{8 - 3} = {( - 9)}^{5}$

$b) {10}^{5} \div 10 = {10}^{5 - 1} = {10}^{4}$

$c) {( - 2)}^{9} \div {( - 2)}^{2} = {( - 2)}^{9 - 2} = {( - 2)}^{7}$