Question

How do you combine like terms in `(5x ^ { 3} - 9x + 6) - ( 7x ^ { 2} + 2x - 1)`?

Answer 1

5x^3 - 7x^2 -11x + 5

Explanation:

You order the polynomial by decreasing powers of x and collect terms that have the same exponent. For instance `-9x` and `-2x` both have exponent one.