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Whakaoti mō x
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

x\in \mathrm{R}
Ko te uara o te kīanga 2x^{2}+4 he tōrunga i ngā wā katoa. E mau ana te koreōrite mō x\in \mathrm{R}.