Question 190001: Simplify 3x^2 – x [ 4 – 3 ( x – 4 )]
Answer by schrammbledeggs(41)   (Show Source):
You can put this solution on YOUR website! First, start simplifying from inside the bracketed parantheses by distributing the 3:
3x^2 - x [ 4 - ((3 * x) - (3*4))]
Next, distribute the negative sign and combine the 4 and 12:
3x^2 - x [ 4 - 3x + 12 ]
3x^2 - x [ -3x + 16 ]
Next, distribute the -x (all in one step this time for quickness sake):
3x^2 + 3x^2 -16x
6x^2 - 16x
You can further simplify by pulling out a 2x:
2x ( 3x - 8)
:)
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