Kunci Jawaban Matematika Kelas 9 Halaman 60, Menghitung Perpangkatan dan Bentuk Akar

c. (6⁴ - 4⁴)
= 1296 - 256
=1040 / 3 = 346,7

d. (¼)⁴ × (-¹/16)²
=(2-²)⁴ × (-2-⁴)²
= 2-8 × 2-6
=2-14

Soal nomor 15

a. 3n = 243
3n = 3⁵
n = 5

b. 2(n+1) = 1 / 16
2(n+1) = 1 / 2⁴
2(n+1) = 2⁻⁴
n + 1 = -4
n = -4 - 1
n = -5

c. 4n = (-2)°
4n = 1
4n = 4°
n = 0

d. 48 : 3 = n4
16 = n4
24 = n4
2 = n

Soal nomor 16

Diketahui 50 kg = 50.000 gram = 5×10⁴ gram
Maka:
5×10⁴ : 2,5×10-2
=(5:2,5)×104-(-2)
=2×104+2
=2×106 gram

Soal nomor 17