{(481 + 426)^2 - 4 × 481 × 426} = - mathselab.com

{(481 + 426)^2 – 4 × 481 × 426} = ?

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

=(a2+2ab+b2)−4ab

=a2−2ab+b2

=(a−b)2

Hence
(481+426)2−4×481×426

=(481−426)2

=552

=3025

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