Factor the expression. x^2+11x+28

Answer: (x+4) (x+7)

Step-by-step explanation:

The middle number is 11 and the last number is 28.

Factoring means we want something like

(x+_) (x+_)

Which numbers go in the blanks?

We need two numbers that ...

Add together to get 11

Multiply together to get 28

Can you think of the two numbers?

Try 4 and 7:

4+7 = 11

4*7 = 28

Fill in the blanks in

(x+_) (x+_)

with 4 and 7 to get ...

(x+4) (x+7)