Hi Roseland;
2x[5+(34x)]
Neither the brackets nor parenthesis seem to be purposeful, so we can eliminate those...
2x5+34x
Then, we can combine like terms...
2x and 4x are like terms. While it is true that we are subtracting 4x, it is also true that subtraction is addition of a negative number.
5 and 3 are also like terms.
2x2
We can simplify even more...
2(x+1)
or
2(x1)
In these equations, the parenthesis are useful in that they tell us that the coefficient of 2 or 2 must be multiplied by unified parenthetical numbers.
I hope this helps. If not, please let me know.
10/20/2013

Vivian L.
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