Question

81 la puterea a 3×9la puterea5÷27

Answer 1

${81}^{3} \times {9}^{5} \div 27 = {( {3}^{4}) }^{3} \times {( {3}^{2}) }^{5} \div {3}^{3}$

$= {3}^{4 \times 3} \times {3}^{2 \times 5} \div {3}^{3}$

$= {3}^{12} \times {3}^{10} \div {3}^{3}$

$= {3}^{12 + 10 - 3} = {3}^{22 - 3} = {3}^{19}$