Jawabanmu

2014-08-20T21:49:34+07:00
(x² - 6xz + 9z²)(x² - 6xz + 9z²)
 x^{4}  - 12 x^{3} z + 18 x^{2}  z^{2}  -108x z^{2}  + 81 z^{4}

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