Try another version of this question
Add the 2 polynomials:
(-9x4+9x3-6x)+(-8x4-10x3+2)
(-9x4+9x3-6x)+(-8x4-10x3+2)
Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question
-17x4-x3-6x+2