Question 64093
The given expression can be written as: 


{{{16x^2 + 40xy + 25y^2}}}


{{{(4x)^2 + 2(4x)(5y) + (5y)^2}}} 



This is in the form of {{{a^2 + 2ab + b^2}}} 



this is nothing but the expansion of {{{(a+b)^2}}} 



So this can be further simplified as :



{{{(4x + 5y)^2}}} 



Regards,

Chitra