Question

Simplify : $(-54{)}^2-{12}^2-(-24{)}^2$

• A. $2196$
• B. $-2196$
• C. $2196i$
• D. $-2196i$

Answer 1

The correct option is A $2196$

$=(-54{)}^2-{12}^2-(-24{)}^2$
$=-54\times -54-12\times 12-[-24\times -24]$
$=2916-144-576$
$=2196$