Question

Factor k^3 - 64 completely

Answer 1

Explanation:

`{x}^(3) - {y}^(3) = (x - y) ({x}^(2) + {y}^(2) + xy)`

`{k}^(3) - {4}^(3)`

`(k - 4)( {k}^(2) + {4}^(2) + 4k)`

`(k - 4)( {k}^(2) + 16 + 4k)`

Hope it helps :)