The book Second Course in Algebra was written by author Webster Wells Here you can read free online of Second Course in Algebra book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Second Course in Algebra a good or bad book?
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14. (-125)--«- 3. 3-1 7. 9-6-2. 11^ (-27)-l 15. (-32)-*. 4. 7^. 8. 100-5-2. 12. 8rt Write with positive exponents : 16. A?h-\ 18. 2a-\ 20. Za-^h\ 17. {2a)-\ 19. (^a)-%\ 21. 2-Vn-^. 22. 4a-%-3. 23. (2 a)^ . (3 &)-2. 122. Negative Exponents in Fractions. Example 1. ?:%^ _ ^^ ^ S/J . ^ ^ ?(^'. Z'^ 1 ar 1 ir z^ This example makes it clear that a factor may be trans- ferred from one term of a fraction to the other provided the sign of its exponent be changed. 146 ALGEBRA Example 2. ^^^T^^^. W-H ty^z...^ Example 3. ^ = 3 a^ftc-^d-^. EXERCISE 66 Write with positive exponents : 1- ^?- 3. ^ . 2r° 5. 6 m^n-3 2. 2«. 6-« 4. -^ . 5 -(2 2/)-^ 6. 3 a-3&2 2 c-^d* jWrite without any denominator : 0. 3f. 11 ^a'^', 13. 7 x-'^y z^ ... Ft 13. '««-^ 14. 7. 15. 16. cc^y ^ 5a'b-i 6 c-*d« 2 c-'di 4 am? 2 6^71-4 ' Historical Note. In the note following § 14, credit is given to Herigone for having grasped the idea of an exponent, and for introducing a rather good notation. As early as 1484, another French mathematician, Chuquet, had had some idea of an exponent and had written expressions involving a form of negative exponent and also the zero exponent.
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