(1+12002+12004+12006)×(12002+12004+12006+12008)-(1+12002+12004+12006+12008)×(12002+12004+12006)=____

题目简介

(1+12002+12004+12006)×(12002+12004+12006+12008)-(1+12002+12004+12006+12008)×(12002+12004+12006)=____

题目详情

(1+
1
2002
+
1
2004
+
1
2006
)×(
1
2002
+
1
2004
+
1
2006
+
1
2008
)-(1+
1
2002
+
1
2004
+
1
2006
+
1
2008
)×(
1
2002
+
1
2004
+
1
2006
)=______.
题型:填空题难度:中档来源:不详

答案

class="stub"1
2002
+class="stub"1
2004
+class="stub"1
2006
=a,class="stub"1
2002
+class="stub"1
2004
+class="stub"1
2006
+class="stub"1
2008
=b,
原式变为(1+a)×b-(1+b)×a,
=b+ab-a-ab,
=b-a,
=class="stub"1
2002
+class="stub"1
2004
+class="stub"1
2006
+class="stub"1
2008
-(class="stub"1
2002
+class="stub"1
2004
+class="stub"1
2006
),
=class="stub"1
2008

故答案为:class="stub"1
2008

更多内容推荐