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Math Help - Simplify, rationalize

  1. #1
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    Simplify, rationalize

    Hello,

    Can someone verify my answers? Thanks. I attached the questions on a pdf.
    Simplify, rationalize-math.pdf

    1.-90 radical 2 + 180
    2. 5+6i
    3.r=4
    4.k = 25? Do I just divide the -10 by 2 and square it?
    5. -21KL radical 7K -22k squared radical 3KL
    6. -4/3
    7. -5i+3/-4
    8. 6 plus minus 2 radical 2
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  2. #2
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    Quote Originally Posted by likewhoa View Post
    Hello,

    Can someone verify my answers? Thanks. I attached the questions on a pdf.
    Click image for larger version. 

Name:	math.pdf 
Views:	27 
Size:	38.6 KB 
ID:	21183

    1.-90 radical 2 + 180
    2. 5+6i
    3.r=4
    4.k = 25? Do I just divide the -10 by 2 and square it? <--- that's correct if the co-efficient of the square is (+1)
    5. -21KL radical 7K -22k squared radical 3KL
    6. -4/3 <-- are you sure that the wording of the question is correct?
    7. -5i+3/-4
    8. 6 plus minus 2 radical 2
    1. There are 9 questions but only 8 answers. Since you didn't use a numeration it is sometimes not possible to assign your answers to the questions.

    2. I've marked in red those parts of your answers which are wrong. I can't show you where you went wrong because you didn't show your work. (Results only are not really helpful here)
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