b. 6⁷/6³
= 6^{7-3 = 4}
= 6⁴

c. b^-6/b^-3 = b^-6-(-3)=-4

= b^-3
= 1/b³

d. 1/a³bc^-4
= 1/a³ x b x 1/c^-4
= 1/a³ x b x c^4/1
= c⁴/a³b

Soal Nomor 6

a. 18t³ x 2t^-3
= 18 x 2.t^3+(-3)=0
= 3^6.1
= 3⁶

b. 2y⁰t³/y⁶t^-2
= 2y^0-6
=-6t^3-(-2)=5
= 2t⁵/y⁶.

c. 2m⁰ x m^-7
= 2m^0+(-7)=-7
= 2m^-7.

d. m³ + 4/m^-3
= m³ + 4m³
= 5m³.

Baca juga: Kunci Jawaban Tema 2 Kelas 6 Halaman 80: Pita Terpendek dan Terpanjang

Soal Nomor 7

d^-5 = 1/d x 1/d x 1/d x 1/d x 1/d = 1/d⁵

Pernyataan tersebut salah karena d^-5 artinya 1/d⁵.

Soal Nomor 8

Diketahui panjang rusuk AB= 1 cm, BC = 5 cm, dan CG = 4 cm.