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2
= ---------
√2 +1
kalau mmg bnar mksudnya gni maka pnyelsaiannya adlah:
2 √2 -1
= -------- x --------
√2 +1 √2 -1
2(√2 -1)
= -------------
2 - 1
=2(√2 -1)
=2√2 - 2