Kunci Jawaban Matematika Kelas 9 Halaman 30, Pembagian pada Perpangkatan

b. (1/t)⁷/(1/t)³
= (1/t^)7-3=4
= 1/t⁷/1/t³
= 1/t⁷ . t^3/1
= t³/t⁷
= t
= 1/t⁴

c. 3m⁷/m³
= 3m^7-3=4
= 3m⁴

d. 42y⁸/12y⁵
= 42/12 . y⁸/y⁵
= (7/2)y³

e. ((1/t)⁷ : (1/t)³) x ((1/t)³ : (1/t)²)
= 1/t⁷/1/t³ x 1/t³/1/t²
= 1/t⁷/1/t²
= 1/t^⁷ . t^2/1
= t²/t⁷
= t^-5
= 1/t⁵

f. 3w⁴/w² x 5w³
= 3w² x 5w³
= 15 w⁵

Soal nomor 3

a. (0,2⁴ x 0,2²) : 0,2⁵
= (0,2)^{4+2-5 = 1}
= (0,2)¹
= 1/5

b. (-5)⁵: (-5)² x (-5)²
= (-5)^{5-2+2 = 1}
= (-5)¹
= -5

c. 12 + (4⁷/4⁶)
= 12 + 4^{7-6 = 1}
= 12 + 4
= 16

d. ((3 x 5⁴)/5³) – 15
= 3 x 5 – 15
= 15 - 15
= 0