# How do you factor #3x^2-2x-8#?

##### 1 Answer

The solution is:

The polynomial is of the type

There are two ways to factor.

The first one:

we have to find two numbers whose sum is

The couple of numbers whose sum is

Now we have to "split" the monomial

So our polynomial becomes:

If it is known the way to solve an equation of 2° degree, here there is the second way to factor it:

We can imagine that this polynomial "becomes" an equation:

and than we have to use this formula:

And now we have to use the formula:

So: