Question

If (x2 – 4) ÷ (x + 2) = x – 2, which polynomial should fill in the blank below? (x + 2) ______ = x2 – 4

Answer 1

(x + 2) __x – 2__ = x2 - 4
Answer: x - 2 

Answer 2

We can use the given to find the answer.

(x+2) times x = x^2 and 2 times -2 = -4

Therefore, (x+2)(x-2) = x^2-4