sederhanakan bilangan berpangkat berikut ini (gunakan cara)

Kelas 9 Matematika
Bab Akar dan Pangkat

^ = pangkat

a] 2 . 8^5 + 5 . 8^6
= 2 . 8^5 + 5 . 8 . 8^5
= 2 . 8^5 + 40 . 8^5
= 42 . 8^5
= 42 . 32.768
= 1.376.256

b] 2 . 7^5 + 3 . 7^4
= 2 . 7 . 7^4 + 3 . 7^4
= 14 . 7^4 + 3 . 7^4
= 17 . 7^4
= 17 . 2.401
= 40.817

c] 3 . (-5)^6 - 2 . (-5)^5
= 3 . (-5) . (-5)^5 - 2 . (-5)^5
= -15 . (-5)^5 - 2 . (-5)^5
= -17 . (-5)^5
= -17 . (-3.125)
= 53.125

d] 5 . 11³ - 7 . 11^4
= 5 . 11³ - 7 . 4 . 11³
= 5 . 11³ - 28 . 11³
= -23 . 11^3
= -23 . 1.331
= -30.613