Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

x\geq 2-3
Tangohia te 3 mai i ngā taha e rua.
x\geq -1
Tangohia te 3 i te 2, ka -1.