Question

-3(x3 - x2 - 2x - 5) - (4x3 - 7x -1 )

Answer 1

Step-by-step explanation:

Aloha !

-3x³+3x²+6x+15-4x³+7x+1

= -7x³+3x²+13x+16

Thank you

Answer 2

Answer:

$given \: the \: task \\ - 3( {x}^{3} - {x}^{2} - 2x - 5) - (4 {x}^{3} - 7x - 1) \\ solution = > \\ Multiplied \: by \: 3 \\ ({ - 3x}^{3} + {3x}^{2} + 6x + 15) - ( {4x}^{3} - 7x - 1) \\ On \: brackets \\ { - 3x}^{3} + {3x}^{2} + 6x + 15 - {4x}^{3} - 7 - 1 \\ { - 7x}^{3} + {3x}^{2} + 6x + 7 \\ { 7x}^{3} - {3x}^{2} - 6x - 7$