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Math Help - Grouping symbols help?

  1. #1
    Ash
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    Grouping symbols help?

    In problems #1 and #2, Insert grouping symbols so that the numerical expression has the values given in parts (a), (b), (c).

    #1: -3 * 4 - 5


    (a) 3 "I think the answer to (a) is -3 (4 -5 )which would =3 "

    (b) -17 "I think the answer to (b) is (-3.4) -5 which would = -17 "

    (c)-7




    Problem #2: 7 - 5^2 +1

    (a) 5

    (b) -19

    (c) -17 "I think the answer to (c) is ( 7 - 5^2 ) + 1= -17 "
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  2. #2
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    Quote Originally Posted by Ash View Post
    In problems #1 and #2, Insert grouping symbols so that the numerical expression has the values given in parts (a), (b), (c).
    #1: -3 * 4 - 5

    (a) 3 "I think the answer to (a) is -3 (4 -5 )which would =3 "
    (b) -17 "I think the answer to (b) is (-3.4) -5 which would = -17 "
    (c)-7

    Problem #2: 7 - 5^2 +1
    (a) 5
    (b) -19
    (c) -17 "I think the answer to (c) is ( 7 - 5^2 ) + 1= -17 "
    Hello,

    #1.(c) -7=-((3 \cdot 4)-5)

    #2.(a) 5=(7-5)^2+1

    #2. (b) -19=7-(5^2+1)

    All results you have mentioned are correct.

    EB
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  3. #3
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    Quote Originally Posted by Ash View Post
    In problems #1 and #2, Insert grouping symbols so that the numerical expression has the values given in parts (a), (b), (c).

    #1: -3 * 4 - 5


    (a) 3 "I think the answer to (a) is -3 (4 -5 )which would =3 "

    (b) -17 "I think the answer to (b) is (-3.4) -5 which would = -17 "

    (c)-7




    Problem #2: 7 - 5^2 +1

    (a) 5

    (b) -19

    (c) -17 "I think the answer to (c) is ( 7 - 5^2 ) + 1= -17 "

    problem #1

    correct answer is b -3*4-5= -12 -5 = -17
    rule is (do arithmatic operation as per order of BODMAS
    B - Bracket
    O - of
    D - Divsion
    M - Multiplication
    A - Addition
    S - Subtraction)

    Problem #2

    7-5^2+1 = 7 -25 +1 = -18+1 = -17 is correct answer

    _ R.Mangalesh
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  4. #4
    Junior Member AlvinCY's Avatar
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    Quote Originally Posted by mangaleswaranr View Post
    problem #1

    correct answer is b -3*4-5= -12 -5 = -17
    rule is (do arithmatic operation as per order of BODMAS
    B - Bracket
    O - of
    D - Divsion
    M - Multiplication
    A - Addition
    S - Subtraction)

    Problem #2

    7-5^2+1 = 7 -25 +1 = -18+1 = -17 is correct answer

    _ R.Mangalesh
    I do believe that the question is actually asking you to insert brackets in such a way so that you can generate each of the 3 answers. Read the question again.
    Last edited by AlvinCY; February 1st 2007 at 05:50 AM. Reason: Spelling
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