...having some trubles with factoring. I was wondering if someone could show me how to factor these. x^2-16 641^2-49y^2 Any help would be appreciated.
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Originally Posted by smallman_11 ...having some trubles with factoring. I was wondering if someone could show me how to factor these. x^2-16 641^2-49y^2 Any help would be appreciated. x^2 - 16 Factoring the above: (x - 4)*(x + 4)...do FOIL (First, Outer, Inner, Last) and check that it works. 641^2-49y^2 Factoring the above: (-7*y + 641)*(7*y + 641); again, check.
thanks for the help.
Originally Posted by smallman_11 ...having some trubles with factoring. I was wondering if someone could show me how to factor these. x^2-16 641^2-49y^2 Any help would be appreciated. When given an expression: $\displaystyle a^2-b^2$ then it factors to: $\displaystyle (a+b)(a-b)$
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