Question

The answer to the polynomial

Answer 1

-Polynomials don't have answers.
This question just wants you to add 2 polynomials.
The pencil work under the first one is incorrect.

Here's what you need to do to find the sum of polynomials:

-- Remove parentheses.
(If there's a plus sign before the whole parentheses, then just erase the parentheses.  If there's a minus sign before the whole thing, then change the sign of each term inside, and erase the parentheses.)

-- Add up all the  x² terms.
 Like this ...

             x² + x² = 2x²
or
          2x² + 7x²  =  9x²

-- Add up all the x³ terms the same way.

-- Add up all the 'x' terms the same way.

-- Add up the plain numbers.

-- Write down all the sums as a new polynomial.