Question

Some steps to rewrite the expression x3 − 4x + x2 − 4 as a product of three factors are shown below:

Step 1: x3 − 4x + x2 − 4
Step 2: x3 + x2 − 4x − 4
Step 3: x2(x + 1) − 4(x + 1)

Which of the following best shows the next two steps to rewrite the expression?

Step 4: (x2 − 4)(x + 1); Step 5: (x − 2)(x + 2)(x + 1)
Step 4: (x2 + 4)(x + 1); Step 5: (x + 2)(x + 2)(x + 1)
Step 4: (x2 − 4)(x + 1); Step 5: (x + 2)(x + 2)(x + 1)
Step 4: (x2 + 4)(x + 1); Step 5: (x − 2)(x + 2)(x + 1)

Answer 1

I know step 5 is (x-2)(x+2)(x+1)
But I don't know what step 4 is.
Im stuck.

Answer 2

its the first on A 100% positive i just did this and got it right hope i helped!