Recognize as difference of squares: Recognize the given expression as a difference of squares.The expression (8x−9)2−(x+5)2 is a difference of squares because it is in the form of a2−b2, where a=(8x−9) and b=(x+5).
Apply formula: Apply the difference of squares formula.The difference of squares formula is a2−b2=(a−b)(a+b). We apply this to our expression where a=(8x−9) and b=(x+5).
Substitute values: Substitute the values of a and b into the formula.Using the values of a and b, we get ((8x−9)−(x+5))((8x−9)+(x+5)).
Simplify expressions: Simplify the expressions inside the parentheses.First, we simplify the left set of parentheses: (8x−9)−(x+5)=8x−9−x−5=7x−14.Then, we simplify the right set of parentheses: (8x−9)+(x+5)=8x−9+x+5=9x−4.
Write final form: Write the final factored form.The factored form of the expression is (7x−14)(9x−4).
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