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> (1)计算:22+(-3)0-9(2)化简:(a+b)2+a(a-2b)-数学
(1)计算:22+(-3)0-9(2)化简:(a+b)2+a(a-2b)-数学
题目简介
(1)计算:22+(-3)0-9(2)化简:(a+b)2+a(a-2b)-数学
题目详情
(1)计算:
2
2
+(-3
)
0
-
9
(2)化简:(a+b)
2
+a(a-2b)
题型:解答题
难度:中档
来源:不详
答案
(1)原式=4+1-3
=2
(2)原式=a2+2ab+b2+a2-2ab
=a2+b2
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题目简介
(1)计算:22+(-3)0-9(2)化简:(a+b)2+a(a-2b)-数学
题目详情
(2)化简:(a+b)2+a(a-2b)
答案
=2
(2)原式=a2+2ab+b2+a2-2ab
=a2+b2