Problem

Factorize the following expression: \(x^{4} - 256\)

Answer

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Answer

Substitute this back into the expression to obtain the final factored form: \(x^{4} - 256 = (x - 4)(x + 4)(x^{2} + 16)\)

Steps

Step 1 :Recognize the expression as a difference of squares \(a^{2} - b^{2}\), where \(a = x^{2}\) and \(b = 16\)

Step 2 :Apply the difference of squares formula: \(a^{2} - b^{2} = (a - b)(a + b)\), therefore \(x^{4} - 256 = (x^{2} - 16)(x^{2} + 16)\)

Step 3 :The term \(x^{2} - 16\) can be further factored using the difference of squares formula, where \(a = x\) and \(b = 4\), therefore \(x^{2} - 16 = (x - 4)(x + 4)\)

Step 4 :Substitute this back into the expression to obtain the final factored form: \(x^{4} - 256 = (x - 4)(x + 4)(x^{2} + 16)\)

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