德望學校 – S1數學 1A Chapter 3 Introduction to Algebra – CQ (16-21)

試卷答案:

1. S = -6
2. x – y – 2xy
3. a) 2X – 15
   b) c (a + b)
4. M = 1/4
5. a) -3x/8
   b) 6
6. F = 1/2
7. a) T_n = n²
   b) 1, 4, 9
   c) Sequence of square numbers
8. s = 0
9. a) 6a⁴ – a
   b) 98
10. a)
    
    b) 15
11. $ 12(x – 3)
12. a) 15150
    b) 9660
13. a) a + 6a²
    b) 1/3
    c) 1/15
14. a) 9
    b) -10a²b
15. \(2x-\dfrac{1}{2}y\)
16. a) -2k² – 5hk
    b) 63b/c
17.  5m (4n + 3)
18.  3ab
19. \(\dfrac{3p}{5q^{2}}\)
20. a) 4p³ – 8p
    b) -8 – 9a + 5a²
21. 26
22. \(-\dfrac{2}{5}x + \dfrac{4}{5}y\)
23. k = 12
24. -4a + b
25. k = -4

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