
Answer:
[tex]11x^{4}-9x^{3}+13x^{2}-x+17[/tex]
Step-by-step explanation:
[tex](5x^{4}+13x^{2}-x+10)-(-6x^{4}+9x^{3}+7)[/tex]
[tex]5x^{4}+13x^{2}-x+10+6x^{4}-9x^{3}-7[/tex]
[tex]5x^{4}+6x^{4}-9x^{3}+13x^{2}-x+10+7[/tex]
[tex]11x^{4}-9x^{3}+13x^{2}-x+17[/tex]