Question

How do you factor the expression `13c^2 - 52`?

Answer 1

`color(brown)(=> 13 * (c + 2 ) * (c - 2))`

Explanation:

`13c^2 - 52 = 13c^2 - 13 * 4`

`=> 13 (c^2 - 4), " taking common term out"`

`color(brown)(=> 13 * (c + 2 ) * (c - 2)) " as " a^2 - b^2 = (a = b) (a - b)`