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barisan bilangan kubik
rumus = 1/4 x n² ( n+1)²
= 1/4 x 15² ( 15+1)²
= 1/4 x 225 x 16²
= 1/4 x 225 x 256
= 225 x 64
= 14400
jawaban nomer 2
saya pecah untuk mempermudah kak
0,5 = 1/2
0,125 = 1/8
^ artinya pangkat ya kak ...
jawaban
16^1/8 - 1/2^ -1/2
= (2^4)^1/8 - (2^-1)^-1/2
= 2^1/2 - 2^1/2
= √2 - √2
= 0