Simplify.Remove grouping symbols and combine like terms. A) `-4{3a^2-2[4a^2-(b+a^2)]}` B) -`2{x^2-3[x-(x-2x^2)]}`



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Posted on (Answer #1)

To simplify, start at the inside expression going outside.



Remove the parenthesis around b+a^2.


Combine like terms inside the bracket.

` `


Eliminate the bracket.


Combine like terms inside the braces.


And remove the braces.


Hence,  `-4{3a^2-2[4a^2-(b+a^2)]}=12a^2-8b` .

(Note: For the second problem, please post it as separate question. )

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