Question 162459
Factor:
{{{40a^8+16a^7+25a^9}}} First, factor {{{a^7}}}
{{{a^7(40a+16+25a^2)}}} Rearrange the trinomial in order of descending powers of a.
{{{a^7(25a^2+40a+16)}}} Now factor the trinomial in parentheses.
{{{a^7(5a+4)(5a+4)}}} or {{{a^7(5a+4)^2}}}