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Math Help - Help with latex expression

  1. #1
    Member cmf0106's Avatar
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    Help with latex expression

    (3x^-2 y)^2 (2xy^-3)^4 is producing...

    (3x^-2  y)^2 (2xy^-3)^4

    when the 3x should be raised to the -2 power, not combine to make 2y. Help please
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by cmf0106 View Post
    (3x^-2 y)^2 (2xy^-3)^4 is producing...

    (3x^-2  y)^2 (2xy^-3)^4

    when the 3x should be raised to the -2 power, not combine to make 2y. Help please
    if a power has more than one "elements" like a minus sign and a 2, put it in {} brackets. so type 3^{-2} to get 3^{-2}

    and you mean the x is raised to the -2 power...

    This is my 8th post!!!!
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  3. #3
    Behold, the power of SARDINES!
    TheEmptySet's Avatar
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    Quote Originally Posted by cmf0106 View Post
    (3x^-2 y)^2 (2xy^-3)^4 is producing...

    (3x^-2 y)^2 (2xy^-3)^4

    when the 3x should be raised to the -2 power, not combine to make 2y. Help please
    You need {} when you want to group an exponent

    like this

    (3x^{-2} y)^2 (2xy^{-3})^4
    Good luck.
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