How do I solve this problem

(x+1)(x−4)

Step-by-step explanation:

Let's factor x2−3x−4

x2−3x−4

The middle number is -3 and the last number is -4.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Add together to get -3

Multiply together to get -4

Can you think of the two numbers?

Try 1 and -4:

1+-4 = -3

1*-4 = -4

Fill in the blanks in

(x+_)(x+_)

with 1 and -4 to get...

(x+1)(x-4)

Make me brainliest!