Question 348629
Do you mean {{{p^2-10pq+25q^2}}}??
{{{p^2-10pq+25p^2=(p-5q)^2}}}
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If not, then,
{{{p^2-10pq+25p^2=26p^2-10pq}}}
{{{p^2-10pq+25p^2=2p(13p-5q)}}}