Proszę o rozwiązanie :)
[(1+-(1-
na pewno dobrze
[(1+√5)²-(1-√5)²]²=[1+2√5+5-(1-2√5+5)]²=(6+2√5-1+2√5-5)²=(4√5)²=16·5=80
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na pewno dobrze
[(1+√5)²-(1-√5)²]²=[1+2√5+5-(1-2√5+5)]²=(6+2√5-1+2√5-5)²=(4√5)²=16·5=80