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Math Help - PLEASE HELP..its easy

  1. #1
    desperateneed
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    PLEASE HELP..its easy

    (4xexponet2)exponent 3

    it amounts to 12exponent8......you power it to 3.

    but in this equation it different..
    (x exponentnegativ2 y exp.3) outside 2......... x ex. negative four y ex.6.............

    im sorry it may seem wierd to read but i need help.
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by desperateneed
    (4xexponet2)exponent 3

    it amounts to 12exponent8......you power it to 3.

    but in this equation it different..
    (x exponentnegativ2 y exp.3) outside 2......... x ex. negative four y ex.6.............

    im sorry it may seem wierd to read but i need help.
    No. For your first problem:
    (4x^2)^3 = 4^3(x^2)^3 = 64x^{(2*3)}=64x^6

    You got the second one right:
    (x^{-2}y^3)^2=(x^{-2})^2(y^3)^2=(x^{(-2*2)})(y^{(3*2)})=x^{-4}y^6

    The general rules are:
    (ab)^n=a^nb^n
    (a^n)^m=a^{n*m}=a^{nm}

    -Dan

    Note: For future reference, click on one of the equations above to see how to code it in LaTeX. It'll be easier for you to write the equations with exponents.
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  3. #3
    Grand Panjandrum
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    Quote Originally Posted by topsquark

    [snip]

    Note: For future reference, click on one of the equations above to see how to code it in LaTeX. It'll be easier for you to write the equations with exponents.
    There are also conventions in fairly wide use on how to write mathematics
    in plain ASCII. Some of which are:

    1. Use brackets to make your meaning clear
    2. Use * to denote multiplication
    3. Use ^ to denote rinsing to a power so x^2 means x-squared
    4. Use / for division, and use brackets to make it clear what is being divided by what.

    I'm sure there are others that I have missed and may be supplied by others.

    RonL

    RonL
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