(4a2b-5ab2)-(3a2b-4ab2).
问题描述:
(4a2b-5ab2)-(3a2b-4ab2).
答
原式=4a2b-5ab2-3a2b+4ab2
=a2b-ab2.
(4a2b-5ab2)-(3a2b-4ab2).
原式=4a2b-5ab2-3a2b+4ab2
=a2b-ab2.