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Math Help - factorising

  1. #1
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    factorising

    anybody know how to factorise this equasion?

    k2L2-mnL-k2L+mn

    k2and L2 shold read K and L squared but dont know how to write this on the computer
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by bart 1000 View Post
    anybody know how to factorise this equasion?

    k2L2-mnL-k2L+mn
    k^2L^2 - mnL - k^2L + mn

    begin by grouping terms that have things in common

    k^2L^2 - k^2L + mn - mnL

    factor out the like terms by groups

    k^2L(L - 1) + mn(1 - L)

    factor out -1 from (1 - L)

    k^2L(L - 1) - mn(L - 1)

    now what?

    k2and L2 shold read K and L squared but dont know how to write this on the computer
    you could type k^2 and L^2 respectively
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  3. #3
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    thanks for help
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  4. #4
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by bart 1000 View Post
    thanks for help
    i hope you know i wasn't finished... i left it to you to do the last step
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  5. #5
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    think its (K^2L-mn)(L-L)?
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  6. #6
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by bart 1000 View Post
    think its (K^2L-mn)(L-L)?
    i suppose you meant (K^2L - mn)(L - 1)

    that is the answer
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  7. #7
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    Cheers
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