3a×(-3ab)-a(ab-2a)
问题描述:
3a×(-3ab)-a(ab-2a)
答
=3a×9ab-a4b+2a
=27a4b-a4b+2a
=26a^4b+2a
3a×(-3ab)-a(ab-2a)
=3a×9ab-a4b+2a
=27a4b-a4b+2a
=26a^4b+2a