Page 34 - Steady Mate Tg1 - Book A

Matematik Tingkatan 1 Bab 3 Kuasa Dua, Punca Kuasa Dua, Kuasa Tiga dan Punca Kuasa Tiga

M Cari nilai bagi setiap yang berikut. TP 2 ARAS R
Find the value of each of the following.

Contoh 1. 3 125 = 5 × 5 × 5 2. 3 216 = 6 × 6 × 6
3
3
3 3 = 5 = 6
27 = 3 × 3 × 3
= 3

Contoh 3. 3 –343 = (– 7) × (– 7) × (– 7) 4. 3 –512 = (– 8) × (– 8) × (– 8)
3
3
3 3 = –7 = –8
–64 = (– 4) × (– 4) × (– 4)
= – 4

3
3
Contoh 5. 3 0.027 = 0.3 × 0.3 × 0.3 6. 3 0.729 = 0.9 × 0.9 × 0.9

3 3 = 0.3 = 0.9
0.001 = 0.1 × 0.1 × 0.1
= 0.1
Contoh 7. 3 –0.064 8. 3 –0.343

3
3
3 3 = (– 0.4) × (– 0.4) × (– 0.4) = (– 0.7) × (– 0.7) × (– 0.7)
–0.008 = (– 0.2) × (– 0.2) × (– 0.2)
= – 0.2 = – 0.4 = – 0.7
Contoh 8 2 2 2 27 3 3 3
9. 3 = 3 7 × 7 × 7 10. 3 = 3 8 × 8 × 8
343 512
64 4 4 4
3 = 3 5 × 5 × 5 2 3
125
= 7 = 8
4
=
5

Contoh 11. 3 –5 23 12. 3 – 4 12
64 125
3 27
3 –3 = 3 – 343 512
8 8 = 3 – = 3 –
64 125
= 1 2 1 2 1 2
3
3
3
× –
–
× –
8
7
8
7
7
8
3 2 2 2 = 1 2 1 2 1 2 = 1 2 1 2 1 2
× –
–
× –
–
× –
× –
3
3
3 4 4 4 5 5 5
= – Tukar kepada 7 3
2 pecahan tak wajar. = – = –1
1 Change to improper 4 5
= –1 3
2 fraction. = –1
4
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