Answer:
C. [tex] 2 {x}^{3} + 5 {x}^{2} - 8x - 4[/tex]
Step-by-step explanation:
[tex] - (2x - 3) + (2 {x}^{3} + 5 {x}^{2} - 6x - 7)[/tex]
[tex] - 2x + 3 + 2 {x}^{3} + 5 {x}^{2} - 6x - 7[/tex]
[tex] - 8x - 4 + 2 {x}^{3} + 5 {x}^{2} [/tex]
[tex] = 2 {x}^{3} + 5 {x}^{2} - 8x - 4[/tex]
