Question

[${(476+424)}^2-4\times 476\times 424]=$?

• A. $2906$
• B. $3116$
• C. $2704$
• D. $2904$
• E. None of these

Answer 1

The correct option is C $2704$

Given Exp. $[{(a+b)}^2-4ab]$, where $a=476$ and $b=424$
$=[{(476+424)}^2-4\times 476\times 424]$
$=[{\left(900\right)}^2-807296]$
$=810000-807296$
$=2704$.