Answers

2016-06-22T20:19:42+08:00
(2x+3)(2x+3)
= 4x squared +6x +6x +9
= 4x squared + 12x + 9

Hope I helped :--))
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2016-06-22T20:36:40+08:00
(2x+3)(2x+3)= A² + 2ab + B²
                    =  (2x)² + 2(2x)(3) + 3²
                    = 4x² + 12x + 9
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