Question

What is the sum of the polynomials? (9x^4-13x^3-x-7)+(7x^3-2x+1) Enter your answer, in standard form, in the box. Do not use spaces. Use "shift" and "6" to get ^ for exponents, (for example, x² = x^2).

Answer 1

Answer: 9x^(4)-6x^(3)-3x-6

Explanation:

Adding: 9x^4-13x^3-x-7

+7x^3-2x+1

9x^4-6x^3-2x-6

You have to line up the polynomials by the biggest exponent to the smallest. You can only add or subtract expressions with the same exponent.