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Mathematics 10 Online
OpenStudy (anonymous):

multiply (x-f) (x+f) (x^2-f^2)

OpenStudy (anonymous):

Multiply the first 2 brackets first ... (x-f) (x+f) = x^2 - f^2 (this is the classic difference if 2 squares) Bracket this result and multiply by the last bracket in the question ... (x^2 - f^2)(x^2-f^2) giving ... (x^4 - 2f^2x^2 +f^4

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