Question

7. Factor Completely (1 Point) x^2– 25

Answer 1

Let's factor x2−25

x2−25

The middle number is 0 and the last number is -25.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Add together to get 0

Multiply together to get -25

Can you think of the two numbers?

Try 5 and -5:

5+-5 = 0

5*-5 = -25

Fill in the blanks in

(x+_)(x+_)

with 5 and -5 to get...

(x+5)(x-5)

Answer:

(x+5)(x−5)