Multiple choice The value of 64a2 - 80ab + 25b2 is ( 8a + 5b )2 ( a - b)2 ( 8a - 5b )2 ( a + b ) 2 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The expression 64a^2 - 80ab + 25b^2 is of the form x^2 - 2xy + y^2, which factors to (x - y)^2. Here, x = 8a and y = 5b, so it is (8a - 5b)^2.