Answers

2014-06-13T07:52:12+08:00
Using special product:
(x+y)²=x²+2xy+y²
(x+3)²=x²+2(x)(3)+3²
(x+3)²=x²+6x+9
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2014-06-15T08:39:26+08:00
(a+3) (a+3) = 6a that is the answer hope make it correct
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