a^2 – b^2 = (a + b)(a – b)

Monograph No. 9: 56 Ideas – Make It, Take It

December 1987

Publication of the Mathematics Council of The Alberta Teachers’ Association

Editors William Bober and John Percevault

Acknowledgements

Robert Michie

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a^2 – b^2 = (a + b)(a – b)

Topic: Difference of Squares