## Question

**{(481 + 426) ^{2} – 4 × 481 × 426} = ?**

A. 3025

B. 3060

C. 3210

D. 4200

**Answer:** A

**Solution:**

Given statement is like (a+b)^{2}− 4ab where a=481 and b=426

(a+b)^{2}−4ab

=(a^{2}+2ab+b^{2})−4ab

=a^{2}−2ab+b^{2}

=(a−b)^{2}

Hence

(481+426)^{2}−4×481×426

=(481−426)^{2}

=55^{2}

**=3025**