Question

(-11ab + 43a - b)(21ab)​

Answer 1

Step-by-step explanation:

$( - 11ab + 43a - b)(21ab) \\ - 231 {a}^{2} {b}^{2} + 903 {a}^{2} b - 21a {b }^{2}$

Answer 2

Answer:

-231a²b² + 903a²b - 21ab²

Step-by-step explanation:

(-11ab + 43a - b) (21ab)​

=[21ab * (-11ab)] + (21ab * 43a) + [21ab * (-b)]

= -231a²b² + 903a²b - 21ab²