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anonymous

  • 5 years ago

How do I factor by grouping 4x-4y+ax-ay?

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  1. anonymous
    • 5 years ago
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    4x-4y+ax-ay = 4x+ax-4y-ay = x(4+a)-y(4+a)

  2. watchmath
    • 5 years ago
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    \(4(x-y)+a(x-y)=(4+a)(x-y)\)

  3. anonymous
    • 5 years ago
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    =(4+a)(x-y)

  4. anonymous
    • 5 years ago
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    I need some sort of formula that I can use on the rest of the problems.

  5. anonymous
    • 5 years ago
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    see what the first 2 terms have in common and factor it out, check that you get the same thing when you factor out what the next two terms have in common

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