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Matematik Tingkatan 2 Bab 2

Pentaksiran Sumatif

Bahagian A 7. Tentukan sama ada setiap yang berikut adalah
“Betul” atau “Salah”.
Determine whether each of the following is “True” or “False”.
1. x(–2y – 5) = [4 markah/ 4 marks]
A 2xy – 5 C 2xy – 5x
B –2xy – 5 D –2xy – 5x Jawapan / Answer :
2. (8 – 5p)(4q – 3r) = (c + d)(c – d) = c – d 2 Betul / True
2
A 20pq – 15pr – 32q – 24r
B –20pq + 15pr + 32r + 32p (c – d)(c + d) = c + d 2 Salah / False
2
C 32q + 15pr – 24r – 20pq
D 32q + 24r – 20pq – 15pr (c + d) = c + 2cd – d 2 Salah / False
2
2
3. Permudahkan.
Simplify. (c – d) = c – 2cd + d 2 Betul / True
2
2
(2m − 3) + 2(1 + 3m)
2
A 2m − 5m + 9 C 4m − 6m + 11 8. Senaraikan faktor sepunya bagi sebutan algebra
2
2
B 2m + 5m − 9 D 4m − 6m − 11 berikut.
2
2
List the common factors of the following algebraic terms.
4. Faktorkan. [4 markah / 4 marks]
Factorise.
3a − 6a − 45 Jawapan/ Answer :
2
A 3(a − 5)(a + 3) C 3(a + 5)(a − 3) 3ab, 9bc 2
B 3(a + 5)(a + 3) D 3(a − 5)(a − 3)
5. Rajah di bawah menunjukkan sebuah segi tiga
PQR.
The diagram below shows a triangle PQR. 1 3 3b b
P
Bahagian C
2x cm
9. (a) Faktorkan 2s − 4s + 2.
2
Factorise 2s − 4s + 2.
2
Q (2x + 7) cm R
[2 markah / 2 marks]
Cari luas, dalam cm , segi tiga itu. Jawapan / Answer :
2
Find the area, in cm , of the triangle. 2s − 4s + 2
2
2
A 2x + 7 C 4x + 14 =2(s − 2s + 1)
2
2
2
2
B 2x + 7x D 4x + 14x =2(s − 1)(s − 1)
2
Bahagian B
(b) Faktorkan setiap ungkapan algebra yang
6. Padankan setiap yang berikut. berikut.
Match each of the following. Factorise each of the following algebraic expressions.
[4 markah/ 4 marks] (i) 16 − 25q 2
Jawapan / Answer : [2 markah / 2 marks]
(g + h) 2 (g – h)(g + h) Jawapan / Answer :
16 − 25q 2
g – h 2 (g – 1)(g + 1)
2
= 4 − 5 q
2
2 2
=(4 − 5q)(4 + 5q)
g – 1 (g – h)(g – h)
2
g – 2gh + h 2 g + 2gh + h 2
2
2
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