Identify Expression Type: Step Title: Identify the Type of ExpressionConcise Step Description: Determine the type of algebraic expression to apply the appropriate factoring technique.Step Calculation: The expression x2−49 is a difference of squares because it can be written as x2−72.
Apply Squares Formula: Step Title: Apply the Difference of Squares FormulaConcise Step Description: Use the difference of squares factoring formula, which is a2−b2=(a+b)(a−b).Step Calculation: Applying the formula to x2−49, we get (x+7)(x−7).