Question

Which expression is a difference of cubes 9w^33-y^12 18p^15-q^21 36a^22-b^16 64c^15-a^27

Answer 1

A. 9w^33-y^12
B. 18p^15-q^21
C. 36a^22-b^16
D. 64c^15-a^27   -----> 64c^15 = (4c^5)^3; a^27 = (a^9)^3

Answer: D. 64c^15-a^27