Sederhanakanlah dan hitunglah : A. 3√64.27 B. 3√64 /8 C. 6^2/6 D. √64/25 : 4√16/81 E. 81^1/4

Bab Bilangan Berpangkat
Matematika SMP Kelas VII

a] 3 √(64 . 27)
= 3 √(8² . 3² . 3)
= 3 . 8 . 3 √3
= 72√3

b] 3 √(64 / 8)
= 3 √8
= 3 √(2² . 2)
= 3 . 2 √2
= 6√2

c] 6² / 6
= 36/6
= 6

d] √(64/25) : 4√(16/81)
= √(8² / 5²) : 4 √(4² / 9²)
= (8/5) : (4 . 4/9)
= (8/5) x (9/16)
= 9/10

e] 81^(1/4)
= (3^4)^(1/4)
= 3^(4/4)
= 3^1
= 3

a. 3√64.27
=3.8.27
=648
b. 3√64/8
=3.8/8
=3
c.6^2/6
=36/6
=6
d. √64/25:4√16/81
=8/5:4.4/9
=8/5:16/9 kali silang
=72/80
=9/10
e. 81^1/4
=3