Page 5 - Matematik Tg3_Praktis Topikal A+_Pan Asia Publications

6. Permudahkan setiap pendaraban yang berikut. TP2
Simplify each of the following multiplication.

Contoh (a) 4a × 6a 6 (b) –4g × 7g 7
5
2
= 4 × 6 × a × a = –4 × 7 × g × g
5
2
6
7
2d × 3d 7 = 24 × a 2 + 6 = –28 × g 5 + 7
4
= 2 × 3 × d × d 7 = 24a 8 = –28g 12
4
= 6 × d 4 + 7
= 6d 11
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(c) –4s × 3s × 0.3s (d) –0.5w × 0.3w × 0.4w (e) 8p × 2p × p × (–3p )
2
3
4
4
3
4
7
2
5
= (–4) × 3 × 0.3 × s × s × s = (–0.5) × 0.3 × 0.4 × w × = 8 × 2 × (–3) × p × p ×
3
2
3
7
4
4
5
4
2
= –3.6 × s 3 + 4 + 7 w × w p × p
= –3.6s 14 = –0.06 × w 2 + 5 + 4 = –48 × p 1 + 3 + 4 + 2
= –0.06w 11 = –48p 10
7. Permudahkan setiap yang berikut. TP2
Simplify each of the following.
Contoh (a) 6 ÷ 6 7 (b) (−9) ÷ (−9) 2
8
15
= 6 15 – 7 = (−9) 8 – 2
3 ÷ 3 = 3 7 – 5 = 6 8 = (−9) 6
5
7
3 ÷ 3 = 3 2
7
5
8. Permudahkan setiap pembahagian yang berikut. TP2
Simplify each of the following division.
Contoh (a) (–t) ÷ (–t) 8 (b) 8e ÷ 4e 2
8
15
= (–t) 15 – 8 8 e 8
9
4
x ÷ x = x 9 – 4 = (–t) 7 = ×
4
2
4
x ÷ x = x 5 = 2 × e e 8 − 2
9
= 2e 6
3 2 5
10
7
(c) –12g 7 (d) –26f ÷ (–13f ) (e) 72x y z ÷ (–8xyz)
y
2
2 = –26 × f 10 = 72 × × ×
5
z
3
x
g
7
= –12 × –13 f 7 –8 x y z
2 g 2 = 2 × f 10 – 7 = –9 × x 3 – 1 × y 2 – 1 × z 5 – 1
2
= −6 × g 7 – 2 = 2f 3 = –9x yz 4
= −6g 5
3