Bqntuin jawab pakek caranya .. Makasih

Kelas 9 Matematika
Bab Akar dan Pangkat

3] 2/(1 – √3)
= 2/(1 – √3) . (1 + √3)/(1 + √3)
= 2 (1 + √3)/(1² – √3²)
= 2 (1 + √3)/(1 – 3)
= 2 (1 + √3)/(-2)
= -1 – √3

✩✩ B ✩✩

4] ((p^-3 . q^5 . r²)^3) / ((p^-5 . q^6 . r^3)²)
= (p^(-3 . 3) . q^(5 . 3) . r^(2 . 3))/(p^(-5 . 2) . q^(6 . 2) . r^(3 . 2))
= p^(-9 + 10) . q^(15 – 12) . r^(6 – 6)
= p . q^3

✩✩ C ✩✩