Recognize Difference of Squares: Determine the approach to factor 25s2−16. We can recognize this expression as a difference of squares because it is in the form a2−b2, where both terms are perfect squares.
Identify Perfect Squares: Identify the squares in the expression 25s2−16.25s2 can be written as (5s)2 because 5s×5s=25s2.16 can be written as 42 because 4×4=16.So, 25s2−16 is in the form (5s)2−42.
Apply Factoring Formula: Apply the difference of squares formula to factor the expression.The difference of squares formula is a2−b2=(a−b)(a+b).Using this formula, we can write (5s)2−42 as (5s−4)(5s+4).
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