Jawabanmu

2014-06-10T14:56:41+07:00
1. 2√4√3 + 3√25√3 = 2.2√3 + 3.5√3 = 4√3 + 15√3 = 19√3
2. 5^3x = 5^3
3x = 3
x = 1
3. sin 810 = - cos (360+450) = - cos 450
- cos 450 = - sin (360+90) = - sin 90 = - 1

semoga bener yaa
3. sin 810 = sin (2.360+90) = sin 90 = 1
sori no 3 tadi caranya ketauan ngasal hahah