109 × 109 + 91 × 91 = ?	Choose the correct choice from the following answers
A) 20162	B) 18322	C) 13032	D) 18662	E) None of these
Explanation :   (a + b)2 + (a − b)2 = 2(a2 + b2)   (Reference : Basic Algebraic Formulas)   1092 + 912 = (100 + 9)2 + (100 − 9)2 = 2(1002 + 92) = 2(10000 + 81) = 20162. 20162nswer : Option 20162
<result>A</result>
109 × 109 + 91 × 91 = ?