Question

-3n ( -n + 4 ) -n ( 3 + 7n )​

Answer 1

$\huge\tt\purple{◑SOLUTION:-}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\implies \tt { - 3n( - n + 4) - n(3 + 7n)}$

$\implies \tt{ {3n}^{2} - 4n - 3n - {7n}^{2} }$

$\implies \tt{ {3n}^{2} - {7n}^{2} - 4n - 3n }$

$\implies \tt{ { - 4n}^{2} - 7n}$