Answer:
\[{{(abc)}^{2}}+2abc\] \[\Rightarrow {{(ab)}^{2}}2(ab)(c)+{{(c)}^{2}}+2abc~~~\] \[\Rightarrow {{a}^{2}}{{b}^{2}}2abc+{{c}^{2}}+2abc\] \[\Rightarrow {{a}^{2}}{{b}^{2}}+{{c}^{2}}\]
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