(422+404)^2−(4×422×404)=? Choose the correct choice from the following answers.
A) 324  B) 342  C) 343  D) 348  E) 322
Explanation :   (a+b)^2−4ab=(a^2+2ab+b^2)−4ab=(a^2−2ab+b^2)=(a−b)^2   Given Equation is in the form (a+b)^2−4ab where a = 422 and b = 404   Hence answer = (a+b)^2−4ab=(a−b)62=(422−404)^2=18^2=324   324nswer is 324
<result>A</result>
(422+404)^2−(4×422×404)=?