Question

[tex] 1)-5 x^{3}- x^{3}-8 x^{3}=;
2)-9 x^{3}-4 x^{3}- x^{3}=;
3)-2a^{3}-4 x^{3}- x^{3}=;

Answer 1

$-5 x^{3}- x^{3}-8 x^{3}=-14 x^{3} ;$
$-9 x^{3}-4 x^{3}- x^{3}=-14 x^{3}$
$-2 a^{3}-4 x^{3}- x^{3}=-2a ^{3}-5 x^{3}$