1a.) Factorize x^(2)-11x+28.
1b.) Using the result in (a), factorize (2y-1)^2-11(2y-1)+28.
2.) Factorize 4^(x)-2^(x+1)-3
F.3 數學題, Thank you!!!
2009-11-15 2:17 am
回答 (1)
2009-11-15 3:04 am
✔ 最佳答案
1a.)x2-11x+28
=(x-7)(x-4)
b.)
(2y-1)2-11(2y-1)+28
=[(2y-1)-7] [(2y-1)-4]
=(2y-8)(2y-5)
2.)
4x-2x+1-3
=(2x)2-2(2x)-3
=(2x-3)(2x+1)
收錄日期: 2021-04-23 20:38:43
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