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Verified answer
Kelas 9 MatematikaBab Akar dan Pangkat
(2√2 - 4) / (2√2 + 4)
= (2√2 - 4)/(2√2 + 4) . (2√2 - 4)/(2√2 - 4)
= (4 . 2 - 8√2 - 8√2 + 16) / (4 . 2 - 16)
= (8 - 16 √2 + 16) / (8 - 16)
= (24 - 16√2)/-8
= 2√2 - 3