Maths Help!!

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    I know (3√7)^2 = 63. But can someone explain how please
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    (Original post by thea_)
    I know (3√7)^2 = 63. But can someone explain how please
    so first you do 3 squared which is 9
    then root 7 squared which is root 49
    root 49 = 7
    then all that is left in the bracket is 9 and 7
    so you do 9 x 7 which = 63

    hope this is right
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    (Original post by thea_)
    I know (3√7)^2 = 63. But can someone explain how please
    This is a very basic question and if you cannot do it, I would recommend you watch this video: -http://www.examsolutions.net/a-level-maths/edexcel/c1-tutorials/

    Watch all the videos in the surd section.
 
 
 
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