Question

What will be the result of $5\times (-(-4\left)\right)\times (-2)$?

Answer 1

$5\times (-(-4\left)\right)\times (-2)$

$=5\times \left(4\right)\times (-2)$ $[\because -(-x)=x]$
$\left[1mark\right]$

$=20\times (-2)$

$=-(20\times 2)$ $[\because -x(y)=-(xy\left)\right]$

$=-40$
$\left[1mark\right]$