(1)38×(54-52-26)(2)(32+53)(32-53)(3)(-1+32)2-数学

题目简介

(1)38×(54-52-26)(2)(32+53)(32-53)(3)(-1+32)2-数学

题目详情

(1)3
8
×(
54
-5
2
-2
6
)

(2)(3
2
+5
3
)(3
2
-5
3
)

(3)(
-1+
3
2
)2
题型:解答题难度:中档来源:不详

答案

(1)原式=6
2
×(3
6
-5
2
-2
6
)=18
12
-60-12
12

=6
12
-60,
=12
3
-60;

(2)原式=(3
2
)
2
-(5
3
)
2

=18-75,
=-57;

(3)(
-1+
3
2
)2
=
4-2
3
4
=
2-
3
2

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