# How do you factor completely: #4x^3 + 28x^2 + 7x + 49#?

##### 2 Answers

Jul 22, 2015

#### Answer:

I found:

#### Explanation:

I can collect

collect

Jul 22, 2015

#### Answer:

#### Explanation:

Notice that

and that

So, by grouping we can re-write the expression with a common factor of

and then applying the distributive property:

Checking the discriminant demonstrates that