[نور العلى]

حل 64 ص 46
البرهان
=(racine(1-racine2
=I1-racine2I
I-(racine2-1)I=racine2-1
racine4-2racine3=racine(1-racine3
==I1-racine3I
=I-(racine3-1)I=
racine3-1