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2\left(x^{3}+4x^{2}+4x\right)
Tauwehea te 2.
x\left(x^{2}+4x+4\right)
Whakaarohia te x^{3}+4x^{2}+4x. Tauwehea te x.
\left(x+2\right)^{2}
Whakaarohia te x^{2}+4x+4. Whakamahia te tikanga tātai pūrua pā, a^{2}+2ab+b^{2}=\left(a+b\right)^{2}, ina a=x, ina b=2.
2x\left(x+2\right)^{2}
Me tuhi anō te kīanga whakatauwehe katoa.