Question

Which polynomial identity will prove that 16 = 25 − 9?


A) Difference of Squares
B) Difference of Cubes
C) Sum of Cubes
D) Square of a Binomial

Answer 1

Should be a) difference of squares since 25 and 9 are both perfect squares. A radical will simply that into (5-3) squared, which equals 16.

Answer 2

I think the answer is A,
hope I helped (: