Jawabanmu

2014-04-04T08:24:33+07:00
1.
(2√8 + √32) - 2√2
= (2 √4√2 + √16√2) - 2√2
= (2 2√2 + 4√2) - 2√2
= (4√2 + 4√2) - 2√2
= 8√2 - 2√2
= 6√2

2.
√27 * 9^n = 243
√3^3 * 3^3n = 3^5
3^3/2 * 3^3n = 3^5
3/2 * 3n = 5
9n/2 = 5
9n = 10
n = 10/9