Question

(7×9)^223÷(7^222×9^221)

Answer 1

${(7 \times 9)}^{223} \div ( {7}^{222} \times {9}^{221} )$

$= ( {7}^{223} \times {9}^{223} ) \div ( {7}^{222} \times {9}^{221} )$

$=( {7}^{223} \div {7}^{222} )\times( {9}^{223} \div {9}^{221})$

$= {7}^{223 - 222} \times {9}^{223 - 221}$

$= {7}^{1} \times {9}^{2}$

$= 7 \times 81$

$=56 7$