(1)计算:2(2-3)+6;(2)计算:8+(14)-1-(5+1)(5-1).-数学

题目简介

(1)计算:2(2-3)+6;(2)计算:8+(14)-1-(5+1)(5-1).-数学

题目详情

(1)计算:
2
(
2
-
3
)+
6

(2)计算:
8
+(
1
4
)-1-(
5
+1)(
5
-1)
题型:解答题难度:中档来源:不详

答案

(1)原式=
2
×
2
-
2
×
3
+
6

=2-
6
+
6

=2;


(2)原式=2
2
+4-(5-1)
=2
2
+4-4
=2
2

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