Jawabanmu

2014-08-30T22:12:35+07:00
1. ((1/2)^x)2 > (1/8)^6-x
= (1/2)^2x > ((1/2)^3)^6-x
= 2x > 3(6-x)
= 2x > 18-3x
= 5x > 18
= x > 18/5

2. √(1/5)^ 2x+1 <(1/25)^ x-2
= ((1/5)^1/2)^2x+1 < ((1/5)^2)^x-2
= 1/2(2x+1) < 2(x-2)
= x + 0,5 < 2x-4
= 4,5 < x

3.
√(5)^ 2x+1 < (25)^x-2
= (
(5)^1/2)^2x+1 < ((5)^1/2)^x-2
= 1/2(2x+1) < 2(x-2)
= x + 0,5 < 2x-4
= 4,5 < x
2014-08-30T22:14:58+07:00
Pa itu mksudnya  saya jga ada soal itu tlong jlaskan donk