Question

помогите пж пж пж умоляю​

Answer 1

Объяснение:

$1) {( {a}^{5} )}^{2} \div {a }^{9} \times {a}^{3 } = {a}^{10 - 9 + 3} = {a}^{4 } \\ 2) {a}^{21} \times {( {a}^{4}) }^{3} \div {( {a}^{3} )}^{10} = {a}^{21 + 12 - 30} = {a}^{3} \\ 3) {b}^{40} \div {( {b}^{2} )}^{11} \div {( {b}^{4} )}^{2} = {b}^{40 - 22 - 8} = {b}^{10} \\ 4) {( {b}^{6} )}^{4} \div {( {b}^{7}) }^{3} \times {( {b}^{2} )}^{3} = {b}^{24 - 21 + 6} = {b}^{9}$