Math! HELP!

For questions 14-15, find the simplified form of each expression.

(3/2b^4)^3

(3/5y^4)^-2

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asked by Abby
  1. Reiny, Steve!! I need help!

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    posted by Abby
  2. (3/2b^4)^3
    = (27/8)b^12

    (3/5y^4)^-2
    = 1/(3/5y^4)^2
    = 1/( (9/25)y^8
    = 25/(9y^8)
    or
    (25/9)y^-8

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    posted by Reiny
  3. Can you help me with some graph ones?

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    posted by Abby
  4. [ ( 3 / 2 ) b ^ 4 ] ^ 3 =

    [ ( 3 ^ 3 ) / ( 2 ^ 3 ) ] * ( b ^ 4 ) ^ 3 =

    ( 27 / 8 ) * b ^ ( 4 * 3 ) =

    ( 27 / 8 ) * b ^ 12 =

    27 b ^ 12 / 8


    ( 3 / 5 y ^ 4 )^ ( - 2 ) =

    [ ( 3 ^ ( - 2 ) ] / [ ( 5 ^ ( - 2 ) ] * [ y ^ 4 ^ ( - 2 ) ] =

    ( 1 / 3 ^ 2 ) / ( 1 / 5 ^ 2 ) * y ^ [ 4 * ( - 2 ) ] =

    ( 1 / 9 ) / ( 1 / 25 ) * ( y ^ - 8 ) =

    [ ( 1 * 25 ) / ( 1 * 9 ) ] * 1 / y ^ 8 =

    ( 25 / 9 ) * 1 / y ^ 8 =

    25 / 9 y ^ 8

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    posted by Bosnian
  5. Fractions

    1-(2/3+1/5)=

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