Question 64093
It helps in factoring this to be able to recognize a perfect square trinomial:
There are two possibilities for a perfect square:
{{{a^2+2ab+b^2=(a+b)^2}}}
{{{a^2-2ab+b^2=(a-b)^2}}}
:
Factor the following trinomial:

{{{16x^2+40xy+25y^2}}}
{{{(4x)^2+2(4x)(5y)+(5)^2}}}
{{{highlight((4x+5y)^2)}}}
Happy Calculating!!!