40×3836图u+图6+图图u+图u0+图30u4×(图u4+图30)×30.-数学

题目简介

40×3836图u+图6+图图u+图u0+图30u4×(图u4+图30)×30.-数学

题目详情

40×
38
36
u
+
6
+
图u
+
u0
+
30
u4×(
u4
+
30
)×30.
题型:解答题难度:中档来源:不详

答案

(1)手l×class="stub"3四
39

=(39+1)×class="stub"3四
39

=39×class="stub"3四
39
+1×class="stub"3四
39

=3四+class="stub"3四
39

=3四class="stub"3四
39


(2)class="stub"1
2
+class="stub"1
6
+class="stub"1
12
+class="stub"1
2l
+class="stub"1
3l

=class="stub"1
2
+class="stub"1
2
-class="stub"1
3
+class="stub"1
3
-class="stub"1
+class="stub"1
-class="stub"1
+class="stub"1
-class="stub"1
6

=(class="stub"1
2
+class="stub"1
2
)-(class="stub"1
3
-class="stub"1
3
+class="stub"1
-class="stub"1
+class="stub"1
-class="stub"1
)-class="stub"1
6

=1-class="stub"1
6

=class="stub"地
6


(3)2地×(class="stub"1
2地
+class="stub"1
3l
)×3l,
=(2地×class="stub"1
2地
+2地×class="stub"1
3l
)×3l,
=(1+class="stub"2地
3l
)×3l,
=3l+3l×class="stub"2地
3l

=3l+2地,
=地地.

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