TH XĐ công suất lý 9

Trường THCS Vĩnh Thịnh

KiÓm tra bµi cò:
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 !"#
$%&'
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/"
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;9/"
2345623789:1)

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Yờu cu hc sinh:
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Thu dn dựng thớ nghim.
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Hon thin bỏo cỏo thc hnh.