已知a-b=3,ab=1,求代数式(2a+3b-2ab)-(a+4b+ab)-(3ab+2b-2a)的值?

2024-12-28 14:40:50
推荐回答(1个)
回答1:

原式=2a+3b-2ab-a-4b-ab-3ab-2b+2a
=3a-3b-6ab
=3(a-b)-6ab
=3*3-6*1
=3