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jawab : A
= (8/√2) × (√2/√2)
= (8×√2) / (√2×√2)
= (8√2) / √4
= (8√2) / 2
= 4√2
Jawaban A.
Tips cara cepat:
a/√n = (a/n)√n
Untuk soal diatas bisa langsung
8/√2 = (8/2)√2 = 4√2