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Posted by on Saturday, September 20, 2008 at 3:38pm.

(4b^4+2) - (7b^2-5) - (6b^4-2b^2)

How do you exactly solve/simplify this? I get confused with the signs when it comes to adding/subtracting terms like these. Thanks much!

  • Math - , Saturday, September 20, 2008 at 3:48pm

    Remember two rules.
    1. Remove parentheses, changing the signs inside the parentheses IF the outside side is negative but not changing if the outside sign is +.
    2. Combine like terms.

    (4b^4+2) - (7b^2-5) - (6b^4-2b^2)

    4b^4+2-7b^2+5-6b^4+2b^2=

    Now just add like terms and go from there if it can be simplified further.

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