√175+4√7-√63 = √25.7 + 4√7 -√9.7
= 5√7 + 4√7 - 3√7
= 6√7
Jawaban : a
11. Pembahasan Soal
Jawaban : c
12. Pembahasan Soal
39-3x = 27
39-3x = 33
9 - 3x = 3
-3x = -6
x = -6/-3
x = 2
Jawaban : a
13. Pembahasan Soal
3-x+2 = 1/81
3-x+2 = 1/34
3-x+2 = 3-4
-x + 2 = -4
-x = -6
x = 6
Jawaban : d
14. Pembahasan Soal
Ab = ....
(2√3+ √5)(3√5- √3) = 6√15-2.3 + 3.5-√15
= 6√15-6 + 15-√15
= 5√15 + 9
Jawaban : a