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    Ms_Holiday's Avatar
    Ms_Holiday Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Feb 18, 2008, 12:58 PM
    Solving Functions
    Can someone help me sovle this problems?. :confused:


    ƒ(x) = -3x^2 - 3x, find ƒ(-3).


    and...


    Simplify: 3√20 + √125 + 2√45


    and...


    Use 9 unit multipliers to convert 20,000 cubic centimeters to cubic miles.


    Thanks... :pBonez
    Ms_Holiday's Avatar
    Ms_Holiday Posts: 2, Reputation: 1
    New Member
    		  
    #2

    Feb 18, 2008, 12:58 PM
    [QUOTE=Ms_Holiday]Can someone help me sovle this problems?. :confused:


    ƒ(x) = -3x^2 - 3x, find ƒ(-3).


    and...


    Simplify: 3√20 + √125 + 2√45


    and...


    Use 9 unit multipliers to convert 20,000 cubic centimeters to cubic miles.


    Thanks... :pBonez
    iamthetman's Avatar
    iamthetman Posts: 105, Reputation: 8
    Junior Member
    		  
    #3

    Feb 20, 2008, 01:57 PM
    ƒ(x) = -3x^2 - 3x, find ƒ(-3).

    Sub in x = -3 and solve.

    Simplify: 3√20 + √125 + 2√45

    You can only add 'like' terms so try converting each term to root 5.
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