Question 86025
{{{(16a^2-40ab+25b^2)}}}
(4a-5b)(4a-5b) 
.
check by using the FOIL method to multiply the factors:
(4a-5b)(4a-5b) 
{{{(4^2a^2-20ab-20ab+5^2b^2)}}}
{{{(16a^2-40ab+25b^2)}}}