Factor 8k3 + 27 by using an identity.
how to do it?

The given expression is factored into

Step-by-step explanation:

Given:

The expression to factor is given as:

We observe that 8 =

Also,

So, the above expression can be rewritten as:

The above expression is of the form .

We know that the above identity is factored as:

Here,

Therefore, the given expression can be factored using the above identity and is factored as:

Hence, the given expression is factored into

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.