Answers

2015-07-02T19:34:03+05:30
1)  152 = (10 + 5)2 
   = 102 + (2)(10)(5) + 52 
   = 100 + 100 + 25    = 225
2)(a + b) 2 = (4)(1/2)(a)(b) + c2
1 5 1