Nomor 8 dan 10 tolong beserta cara yh

(8)
3/(√6 - √5)
= 3/(√6 - √5) × (√6 + √5)/(√6 + √5)
= 3(√6 + √5)/(6 - 5)
= 3(√6 + √5)/1
= 3(√6 + √5)

(10)
a = 3
U6 = ar^5 = 96
3 × r^5 = 96
r^5 = 32
r = 2

Un = ar^(n - 1)
3072 = 3 × 2^(n - 1)
1024 = 2^(n - 1)
2^10 = 2^(n - 1)
10 = n - 1
11 = n