Question

please explain me this ​

Answer 1

Answer:

c) 8a³b⁴

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Answer 2

Answer:

$= \frac{ - 56 {a}^{4} {b}^{5} }{ - 7ab} \\ \\ = \frac{ - 7ab(8 {a}^{3} {b}^{4}) }{ - 7ab} \\ \\ = 8 {a}^{3} {b}^{4}$