Kunci Jawaban Matematika Kelas 9 Semester 1 Halaman 46-49 Latihan 1.4 Materi Pangkat dan Bentuk Akar

Soal nomor 5

a. 2m-4 x m-3
= 2m-4+(-3)=-7

= 2/m7.

b. 67/63
= 67-3 = 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 c4/1
= c4/a3b

Soal nomor 6

a. 18t3 x 2t-3
= 18 x 2.t3+(-3)=0
= 36.1
= 36

b. 2y0t3/y6t-2
= 2y0-6
=-6t3-(-2)=5
= 2t5/y6.

c. 2m0 x m-7
= 2m0+(-7)=-7
= 2m-7.

d. m3 + 4/m-3
= m3 + 4m3
= 5m3.

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.