Answers

2016-06-13T16:43:46+08:00
If I assumed x2 is x raised to 2, the the answer would be 3x2 + 21.
Otherwise, if x2 is 2x then the answer would be 6x + 21.
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2016-06-13T18:37:51+08:00
42 i dont think so I'll just solve 1st the parenthesis 
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