Question

Which expression is a difference of cubes? O X6-6 O X6-8 O x8-6 O x8-8

Answer 1

Answer:

x6 - 8

Step-by-step explanation:

Answer 2

Answer:

$x^{6}$ - 8

Step-by-step explanation:

A difference of cubes has the form

a³ - b³

Note that $x^{6}$ is a perfect cube, that is $(x^2)^{3}$, but

$x^{8}$ is not

8 is a perfect cube, that is 2³ , but 6 is not

Thus

$x^{6}$ - 8 ← is a difference of cubes

= $(x^2)^{3}$ - 2³