Question

Which expression is a difference of cubes?

9w33 - y12
18p15-q21
36a22-b16
64c15 - d27

Answer 1

Answer:

D. 64c15 - d27

Step-by-step explanation:

A. 9w33 - y12

No. 9 is not a perfect cube

B. 18p15-q21

No. 18 is not a perfect cube

C. 36a22-b16

No. 36 is not a perfect cube and 16 is not divisible by 3

D. 64c15 - d27

Yes. (4c^5)^3 - (d^9)^3

Explanation:

Answer 2

• D. 64c15 - d27

Explanation:

A. 9w33 - y12

• No. 9 is not a perfect cube

B. 18p15-q21

• No. 18 is not a perfect cube

C. 36a22-b16

• No. 36 is not a perfect cube and 16 is not divisible by 3

D. 64c15 - d27

• Yes. (4c^5)^3 - (d^9)^3