Answer: b. (x−4)(x−10)
Step-by-step explanation:
Let's factor x^2−14x+40
x^2−14x+40
The middle number is -14 and the last number is 40.
Factoring means we want something like
(x+_)(x+_)
Which numbers go in the blanks?
We need two numbers that...
Add together to get -14
Multiply together to get 40
Can you think of the two numbers?
Try -4 and -10:
-4+-10 = -14
-4*-10 = 40
Fill in the blanks in
(x+_)(x+_)
with -4 and -10 to get...
(x-4)(x-10)
Answer:
(x−4)(x−10)
