To prove that expression A \((x+4)(x−2)\) is equivalent to expression B \(x^2+2x−8\), we can follow these steps:
-
Start with Expression A:
- First: Option #1: \((x+4)(x−2)\) (Start)
-
Use the distributive property (also known as the FOIL method) to expand:
- Second: Option #4: \(x(x)−x(2)+4(x)−4(2)\)
-
Simplify the expression:
- Third: Option #2: \(x^2−2x+4x−8\)
-
Combine like terms:
- Fourth: Option #3: \(x^2+2x−8\)
So, the correct order is:
First: Option #1
Second: Option #4
Third: Option #2
Fourth: Option #3