1-(101010202020)2×(202020303030)2×(333033555055)2×(555555777777)2=______.-数学

题目简介

1-(101010202020)2×(202020303030)2×(333033555055)2×(555555777777)2=______.-数学

题目详情

1-(
101010
202020
2×(
202020
303030
2×(
333033
555055
2×(
555555
777777
2=______.
题型:解答题难度:中档来源:不详

答案

1-(class="stub"101010
202020
)2×(class="stub"202020
303030
)2×(class="stub"333033
555055
)2×(class="stub"555555
777777
)2
=1-(class="stub"10×10101
20×10101
)2×(class="stub"20×10101
30×10101
)2×(class="stub"111011×3
111011×5
)2×(class="stub"111111×5
111111×7
)2
=1-(class="stub"1
2
)2×(class="stub"2
3
)2×(class="stub"3
5
)2×(class="stub"5
7
)2
=1-class="stub"1
4
×class="stub"4
9
×class="stub"9
25
×class="stub"25
49

=1-class="stub"1
49

=class="stub"48
49

故答案为:class="stub"48
49

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