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Soidz30092000
2 năm trước
Bài 1 Rút gọn (Đưa thừa số ra ngoài dấu căn nếu được) a)Căn 98 - Căn 72 + 0,5 Căn 8 b)2 Căn 8 - Căn 12 + 3 Căn 2 c)Căn 5 + Căn 20 - Căn 10 d)Căn 9a - Căn 10a - Căn 49a () e)Căn 160 + 2 Căn 40b - 3 Căn 90b () f)( 2 Căn 3 + Căn 5). Căn 3 - Căn 60 g)(Căn 28 - Căn 12 - Căn 7)(Căn 7 + 2 Căn 21)
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