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    nasir1's Avatar
    nasir1 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 13, 2012, 06:39 AM
    get math questions answered free
    (3a-7b)^2
    Abhimanyu Pudi's Avatar
    Abhimanyu Pudi Posts: 77, Reputation: 4
    Junior Member
    		  
    #2

    Nov 13, 2012, 04:46 PM
    Use (x-y)^2 = x^2 + y^2 - 2xy
    Put x = 3a and y = 7b
    mathteacher808's Avatar
    mathteacher808 Posts: 1, Reputation: 1
    New Member
    		  
    #3

    Nov 17, 2012, 03:41 PM
    Hey!

    Let me help you!
    My answer is
    49*b^2-42*a*b+9*a^2
    You can see how I got it here:
    http://www.numberempire.com/fractionscalculator

    Good luck
    Angie2013's Avatar
    Angie2013 Posts: 5, Reputation: 1
    New Member
    		  
    #4

    Nov 18, 2012, 10:38 AM
    This is really fine than just giving the entire solution. Make the OP's solve their problem.
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