(1)计算:9+(?2011)0?(?1)3(2)化简:(a-b)2-a(a-2b

(1)计算:9+(?2011)0?(?1)3(2)化简:(a-b)2-a(a-2b)
2025-06-27 02:45:57
推荐回答(1个)
回答1:

(1)解:原式=3+1+1=5;

(2)解:原式=a2-2ab+b2-a2+2ab,
=b2