Maths Logarithms, indices,surd

👨🏻‍🏫 學術台數學

yuet

2009-12-12 6:36 am

(1)Express &radic;126 in its simplest form
(2) Simplify &radic;163/3
(3) Simplify &radic;8 + 3&radic;2
PLS HELP
THX!!!

更新1:

√ = (1) 開方126 (√126) (2) 開方163/3 (BOTH 開方) (3) 開方8+開方2 X 3

回答 (1)

用戶9112

2009-12-12 6:45 am

✔ 最佳答案

(1) √126
= √(3 * 3 * 14)
= 3√14
(2) √(163/3)
= √[(163 * 3)/9]
= (√489) / 3
(3)√8 + 3√2
= √(2*2*2) + 3√2
= 2√2 + 3√2
= 5√2

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