[tex]\displaystyle 0,1u^4z^3+2,7uz^6=\frac{1}{10}u^4z^3+\frac{27}{10}uz^6=\frac{1}{10}uz^3(u^3+27z^3)=\\0,1uz^3(u+3z)(u^2-3uz+9z^2)[/tex]
[tex]\displaystyle\bf\\0,1u^{4} z^{3} +2,7uz^{6} =0,1uz^{3} \cdot\Big(u^{3}+27z^{3} \Big)=0,1uz^{3} \cdot\Big[u^{3} +\Big(3z\Big)^{3}\Big]=\\\\\\=\boxed{0,1uz^{3} \cdot\Big(u+3z\Big)\cdot\Big(u^{2} -3uz+9z^{2} \Big)}[/tex]
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[tex]\displaystyle 0,1u^4z^3+2,7uz^6=\frac{1}{10}u^4z^3+\frac{27}{10}uz^6=\frac{1}{10}uz^3(u^3+27z^3)=\\0,1uz^3(u+3z)(u^2-3uz+9z^2)[/tex]
[tex]\displaystyle\bf\\0,1u^{4} z^{3} +2,7uz^{6} =0,1uz^{3} \cdot\Big(u^{3}+27z^{3} \Big)=0,1uz^{3} \cdot\Big[u^{3} +\Big(3z\Big)^{3}\Big]=\\\\\\=\boxed{0,1uz^{3} \cdot\Big(u+3z\Big)\cdot\Big(u^{2} -3uz+9z^{2} \Big)}[/tex]