Simplify x^2-4

Problem

x2−4

Solution

1. Identify the expression as a difference of two squares, which follows the pattern a2−b2

2. Rewrite the constant term as a square, noting that 4=2

3. Apply the formula for the difference of squares, a2−b2=(a−b)*(a+b) where a=x and b=2

Final Answer

x2−4=(x−2)*(x+2)

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