What is the perimeter of the triangle?

Answer:
7x^3+7x^2+18
Step-by-step explanation:
11x^2+8+6x^3+10-4x^2+x^3
=6x^3+x^3+11x^2-4x^2+8+10
=6x^3+x^3+7x^2+8+10
=7x^3+7x^2+8+10
=7x^3+7x^2+18