# How do you combine (8x^3 - 8x - 4) - (-16x^6 + 9x3 - 6x2)?

$16 {x}^{6} - {x}^{3} + 6 {x}^{2} - 8 x - 4$
$8 {x}^{3} - 8 x - 4 + 16 {x}^{6} - 9 {x}^{3} + 6 {x}^{2} =$
$= 16 {x}^{6} - {x}^{3} + 6 {x}^{2} - 8 x - 4$