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3\left(x^{3}+2x^{2}+x\right)
Tauwehea te 3.
x\left(x^{2}+2x+1\right)
Whakaarohia te x^{3}+2x^{2}+x. Tauwehea te x.
\left(x+1\right)^{2}
Whakaarohia te x^{2}+2x+1. Whakamahia te tikanga tātai pūrua pā, a^{2}+2ab+b^{2}=\left(a+b\right)^{2}, ina a=x, ina b=1.
3x\left(x+1\right)^{2}
Me tuhi anō te kīanga whakatauwehe katoa.