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

c. m³ + 4/m⁻³
= m³ + 4m³ = 5m³

Soal nomor 21

a. x³y = (27)³ . 63
= (3³)³ . (3 . 3 . 7)
= 3⁹ . 3² . 7
= 3⁽⁹⁺²⁾ . 7
= 3¹¹ . 7

b. x/√y = 27/√63
= 3³/√(3 . 3 . 7)
= 3³/√(3² . 7)
= 3³/3√7
= 3⁽³⁻¹⁾/√7
= 3²/√7

Baca Juga: Soal UAS Matematika Kelas 12 SMK Semester 2 Beserta Jawabannya, Latihan Soal Ujian Sekolah Matematika SMK 2023

Soal nomor 22

a. 243/20
= 3⁵/(4 x 5)
= 3⁵/(2² x 5)

b. 500/9
= (100 x 5)/ 3²
= (10² x 5)/3²

c. 50/625
= (25 x 2)/5⁴
= (5² x 2)/5⁴
= 2/5²

d. 49/686
= 7²/(343 x 2)
= 7²/(7³ x 2)
= 1/(7 x 2)