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(1)√ 5+2√ 5×√ 2+2
(2)√ 7+4√ 3
人气:473 ℃ 时间:2020-02-06 10:55:35
解答
√ 5+2√ 5×√ 2+2
=√ 5+2√ 10+2
√ 7+4√ 3
=√ 7+4√ 3
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