Question

Add the following polynomials: (3x2 – 2x – 1) + (2x2 – 9x + 1)

Answer 1

(3x^2 – 2x – 1) + (2x^2 – 9x + 1)

3x^2 – 2x – 1 + 2x^2 – 9x + 1

(3x^2 + 2x^2) + (-2x - 9x) + (-1 + 1)

What's the next step?

Answer 2

combine like terms, and then add them

Answer 3

first, equate it to zero then follow the process given by luis_rivera :)