Tolong bantu dijawab no. 5,7,9,klu bisa dgan cra krjanya!!
A5ran91
5). 2^3 ------ = 8 x 25 = 200 jwaban D 5^-2
7). 8/akar 7 - akar 3 = 8/akar 7 - akar 3 × akar 7 + akar 3/akar 7 + akar 3 = 8 akar 7 + 8 akar 3 ----------------------------- 7 - 3 = 8 akar 7 + 8 akar 3 ---------------------------- 4 = 2 akar 7 + 2 akar 3 jawaban B
9). u1 = a = 12 u7 = 36 a + 6b = 36
sehingga nilai b yaitu: a + 6b = 36 12 + 6b = 36 6b = 36 - 12 6b = 24 b = 24/6 b = 4
nilai u4 sbb: u4 = a + 3b = 12 + 3(4) = 12 + 12 = 24
------ = 8 x 25 = 200 jwaban D
5^-2
7). 8/akar 7 - akar 3 =
8/akar 7 - akar 3 × akar 7 + akar 3/akar 7 + akar 3
= 8 akar 7 + 8 akar 3
-----------------------------
7 - 3
= 8 akar 7 + 8 akar 3
----------------------------
4
= 2 akar 7 + 2 akar 3
jawaban B
9). u1 = a = 12
u7 = 36
a + 6b = 36
sehingga nilai b yaitu:
a + 6b = 36
12 + 6b = 36
6b = 36 - 12
6b = 24
b = 24/6
b = 4
nilai u4 sbb:
u4 = a + 3b
= 12 + 3(4)
= 12 + 12
= 24
jawaban D