Tīpoka ki ngā ihirangi matua
Whakaoti mō x, y, z
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Tohaina

y=0 0\times 42=\frac{\left(1-x\right)\left(1-x\right)}{1+x} z=y
Me raupapa anō ngā whārite.
z=0
Whakakapia te 0 mō te y i te whārite z=y.
x=1
Me whakaoti te 0\times 42=\frac{\left(1-x\right)\left(1-x\right)}{1+x} mō x.
x=1 y=0 z=0
Kua oti te pūnaha te whakatau.