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Tohaina

2\left(x^{2}-\frac{2}{3}x+\frac{1}{9}\right)+1-\frac{1}{9}
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(x-\frac{1}{3}\right)^{2}.
2x^{2}-\frac{4}{3}x+\frac{2}{9}+1-\frac{1}{9}
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x^{2}-\frac{2}{3}x+\frac{1}{9}.
2x^{2}-\frac{4}{3}x+\frac{11}{9}-\frac{1}{9}
Tāpirihia te \frac{2}{9} ki te 1, ka \frac{11}{9}.
2x^{2}-\frac{4}{3}x+\frac{10}{9}
Tangohia te \frac{1}{9} i te \frac{11}{9}, ka \frac{10}{9}.
2\left(x^{2}-\frac{2}{3}x+\frac{1}{9}\right)+1-\frac{1}{9}
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(x-\frac{1}{3}\right)^{2}.
2x^{2}-\frac{4}{3}x+\frac{2}{9}+1-\frac{1}{9}
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x^{2}-\frac{2}{3}x+\frac{1}{9}.
2x^{2}-\frac{4}{3}x+\frac{11}{9}-\frac{1}{9}
Tāpirihia te \frac{2}{9} ki te 1, ka \frac{11}{9}.
2x^{2}-\frac{4}{3}x+\frac{10}{9}
Tangohia te \frac{1}{9} i te \frac{11}{9}, ka \frac{10}{9}.