因式分解:2a²-3ab-2b²+5a+5b-3kuai
问题描述:
因式分解:2a²-3ab-2b²+5a+5b-3
kuai
答
2a²-3ab-2b²+5a+5b-3
=(2a²-2a²)-3ab+5a+5b-3
=-3ab+5a+5b-3
答
2a²-3ab-2b²+5a+5b-3
=(2a+b-1)(a-2b+3)