Question

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Answer 1

✳Vamos lá✳

$a)(21x ^{6} ) \div (7x ^{4} ) \\ 3x ^{2} \\ \\ b)( - 10a ^{8} ) \div ( - 5a ^{3} ) \\ 2a ^{5} \\ \\ c)(15x ^{3} y) \div (5xy) \\ 3x ^{2} \\ \\ d)(36x ^{7} y ^{5} ) \div (6x ^{4} {y}^{2}) \\ 6 {x}^{3} {y}^{3} \\ \\ e)(45 {a}^{6} {b}^{5} ) \div (9 {a}^{3} {b}^{2} ) \\ 5 {a}^{3} {b}^{3}$