Identify Form: Identify the form of the expression.The given expression is 4w2−81. This is a difference of squares because it can be written as (2w)2−92.
Apply Formula: Apply the difference of squares formula.The difference of squares formula is a2−b2=(a+b)(a−b). Here, a=2w and b=9.
Factor Expression: Factor the expression using the formula.Using the values of a and b from Step 2, we get the factored form as (2w+9)(2w−9).
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