Tīpoka ki ngā ihirangi matua
Whakaroha
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

x^{2}+xz+x-x-z-1
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o x-1 ki ia tau o x+z+1.
x^{2}+xz-z-1
Pahekotia te x me -x, ka 0.
x^{2}+xz+x-x-z-1
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o x-1 ki ia tau o x+z+1.
x^{2}+xz-z-1
Pahekotia te x me -x, ka 0.