Answers

2014-11-07T15:38:40+05:30
( a + b )² = a² + 2ab + b²

(x + 5)²  = x² + 2 x 5x + 5²
             =  x² + 10x +25
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2014-11-07T15:40:57+05:30
  =>[x+5]²
=  x²+25+10            {a+b}²=a²+b²+2ab
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