# Can #y=x^2 + 10x + 21 # be factored? If so what are the factors ?

##### 2 Answers

Dec 13, 2015

Yes.

#### Explanation:

Yes.

Dec 13, 2015

#### Explanation:

To look for the factored form of a polynomial, look for the numbers whose **product** is the **final number** and whose **sum** is the **middle constant**.

The possible pairs of numbers whose product is

The sum of

Thus, we can factor

A good way to check your work is to redistribute the factored form.