Упростите: 2a(2b^2-b)+ab^2

Question

Упростите: 2a(2b^2-b)+ab^2

Answer 1

=4ab^2-2ab+ab^2=5ab^2-2ab или = аb(5b-2)

Answer 2

=4ab^2-2ab+ab^2=5ab^2-2ab=ab(5ab-2)