Identify common factor: Identify the common factor in both terms of the expression.The common factor is (x−4).
Factor out common factor: Factor out the common factor from the expression.The expression 4x2(x−4)−(x−4) can be written as (x−4)(4x2−1).
Recognize difference of squares: Recognize that the expression 4x2−1 is a difference of squares.A difference of squares can be factored as (a2−b2)=(a+b)(a−b).Here, a=2x and b=1, so 4x2−1=(2x)2−12.
Factor difference of squares: Factor the difference of squares.Using the identity from the previous step, we get (2x+1)(2x−1).
Combine factored parts: Combine the factored parts to get the final factored expression.The completely factored form is (x−4)(2x+1)(2x−1).
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