Kunci Jawaban Matematika Kelas 9 Halaman 20, 21, 22 Latihan 1.2 Perkalian pada Perpangkatan Terlengkap 2022

Jawab: 2^7 x b^(1+3) x y^(7+2)
= 2^7 x b^4 x y^9

c. 3m^3 x (mn)^4

Jawab: 3^3 x m^3 x m^4 x n^4
= 3^3 x m^(3+4) x n^4
= 3^3 x m^7 x n^4

d. (tn^3)^4 x 4t^3

Jawab: tn^(3x4) x 4^3 x t^3
= tn^12 x 4^3 x t^3
= t^12 x n^12 x 4^3 x t^3
= t^(12+3) x n^12 x 4^3
= 4^3 x t^15 x n^12

e. 2x^3 x 3(x^2.y^2)^3 x 5y^4

Jawab: 2^3 . x^3 . 3^3 . x^(2x3) . y^(2x3) . 5^4 . y^4
= 2^3 . 3^3 . 5^4 . x^3 . x^6 . y^6 . y^4
= 2^3 . 3^3 . 5^4 . x^(3+6) . y^(6+4)
= 2^3 . 3^3 . 5^4 . x^9 . y^10

4. Tentukan nilai dari perpangkatan berikut ini.

a. 3^3 x 2 x 3^7

Jawab: 3^(3+7) x 2
= 3^10 x 2
= 59.049 x 2
= 118.098