Question

Tolong dibantu kak..
1 sampai Lima.
pake cara ya kk...
bso k dikumpul

Answer 1

Verified answer

Jawab

(1)
(243²)⁻¹/⁵

= ((3⁵)²)⁻¹/⁵
= (3¹⁰)⁻¹/⁵
= (3⁻²)
= 1/(3²)
= 1/9

(2) 
3√75 + 4√12 - 5√48 =
= 3. √25.3  + 4 √4. 3 - 5 √16.3
= 3.5√3  +  4. 2√3 - 5. 4√3
= 15 √3 + 8√3 - 20√ 
= (15 + 8 -20) √3
= 3 √3

(3) 
6 / (√7 -  2) =
=  6 (√7  + 2) / (√7 -2 )(√7 + 2)
= 6 (√7  + 2)/ (7 -4)
= 6 (√7 + 2) / (3)
= 2 (√7 +  2)
= 2√7 + 4

(4) 
pola 1  ada 7 = 4(1) + 3 
pola 2  ada  11 =4(2) + 3
pola 3  ada  15 = 4(3)+ 3
pola  n ada 4n + 3
pola 15 = 4(15) + 3= 63


(5)
suku barisan  4, 7, 10, 13...m136
a = 4
b = 7-4 = 3
un = 136
a + (n-1) b = 136
4 +(n-1)3 = 136
3(n-1) = 136 - 4 = 132
n-1 = 132/3 =  44
n = 44 + 1
n = 45