Try another version of this question
Add the 2 polynomials:
`(-9x^4-5x^3+6x) + (x^4-2x^3-5)`
`(-9x^4-5x^3+6x) + (x^4-2x^3-5)`
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
`-8x^4-7x^3+6x-5`