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\left(3x^{2}-2\right)^{2}
Whakamahia te tikanga tātai pūrua pā, a^{2}-2ab+b^{2}=\left(a-b\right)^{2}, ina a=3x^{2}, ina b=2. Kāore te pūrau 3x^{2}-2 i whakatauwehea i te mea kāhore ōna pūtake whakahau.