1/√7+√6+√5
rationalize this 1 over 7 square root +6 square toot+5 square root
中二數學的問題
2008-12-05 3:45 am
回答 (2)
2008-12-05 9:00 am
✔ 最佳答案
The answer is as follows:圖片參考：http://i277.photobucket.com/albums/kk75/uncle_michael/20081205_mat_1.jpg?t=1228409961
2008-12-05 4:50 am
1/√7+√6+√5
Sol: 1/√7+√6+√5
....= ( 1/√7)(√7/√7) +√6 +√5
....= √7 / 7 + 7√6 / 7 + 7√5 / 7
....= ( √7 + 7√6 + 7√5) / 7.............(Answer)
Sol: 1/√7+√6+√5
....= ( 1/√7)(√7/√7) +√6 +√5
....= √7 / 7 + 7√6 / 7 + 7√5 / 7
....= ( √7 + 7√6 + 7√5) / 7.............(Answer)
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