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  1. #1
    Junior Member
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    Feb 2008
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    expand

    I have some Questions, that i need help with, explaining how to do them for myself would be a huge help.

    How would i simplify this equation?
    ‑3 x a x b - 5 x a x ‑b

    I have to find the value of this expression: 2x2 - 3y + 5 when x = 2 and y = ‑3

    Simplify 5a 2 - 4ab 2 - 2a 2 + 6ab 2

    Expand and then simplify:

    a. 4(3 + 2x - y) - 2(5 - x + 3y)

    b. a(3b + x) + b(2a - y)





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  2. #2
    Member
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    Dec 2007
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    Quote Originally Posted by Seza<3 View Post
    I have some Questions, that i need help with, explaining how to do them for myself would be a huge help.

    How would i simplify this equation?
    ‑3 x a x b - 5 x a x ‑b

    I have to find the value of this expression: 2x2 - 3y + 5 when x = 2 and y = ‑3

    Simplify 5a 2 - 4ab 2 - 2a 2 + 6ab 2

    Expand and then simplify:

    a. 4(3 + 2x - y) - 2(5 - x + 3y)

    b. a(3b + x) + b(2a - y)





    Am I correct to assume the bolded parts should look like this...?

    -3xaxb-5xax(-b)

    2x^2-3y+5

    5a^2-4ab^2-2a^2+6ab^2
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  3. #3
    Junior Member
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    Feb 2008
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    ah yes sorry, i'm not that adept at using principles on the Internet.
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  4. #4
    Junior Member
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    Feb 2008
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    well can you help me?
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  5. #5
    Newbie
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    Feb 2008
    From
    Makati, Philippines
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    3
    Quote Originally Posted by Seza<3 View Post
    I have some Questions, that i need help with, explaining how to do them for myself would be a huge help.

    How would i simplify this equation?
    ‑3 x a x b - 5 x a x ‑b

    I have to find the value of this expression: 2x2 - 3y + 5 when x = 2 and y = ‑3

    Simplify 5a 2 - 4ab 2 - 2a 2 + 6ab 2

    Expand and then simplify:

    a. 4(3 + 2x - y) - 2(5 - x + 3y)

    b. a(3b + x) + b(2a - y)





    well i cant help in all..but i know some..

    5a 2 - 4ab 2 - 2a 2 + 6ab 2
    is 3a2 + 2ab2

    a. 4(3 + 2x - y) - 2(5 - x + 3y)

    b. a(3b + x) + b(2a - y)

    12 + 8x - 4y - 10 +2x - 6y or 10x - 10y - 2
    3ab + ax + 2ab - yb or 5ab + ax - yb

    2x2 - 3y + 5 when x = 2 and y = ‑3

    uhm is y = .3? or y = 3? if its y = 3 then
    2(2)2 - 3(3) + 5 = 4

    the first few questions are knowing how to distribute and multiplying. the other one is substitution..
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