Question

(–x2 + 9) + (–3x2 – 11x + 4)

Answer 1

Answer:

Sum of the polynomials is just a matter of combining like terms, with some order of operations.

Given the polynomials : and

First arrange the given Polynomial in standard form.

A Standard form of a polynomial  means that the term with highest degree is first and each of the following terms

Since the given polynomial are already in standard form i.e,

and  

then, the Sum of the polynomials is:

or

                   [after removing bracket]

Combine like terms:

or

Therefore, the sum of polynomials of   and is;

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Answer 2

Answer:

$(- {x}^{2} + 9) + ( - {3x}^{2} - 11x + 4) \\ = - {x}^{2} + 9 - {3x}^{2} - 11x + 4 \\ = - {4x}^{2} - 11x + 13 \\ = {4x}^{2} + 11x - 13$

I think something is wrong with the question....

As there is no common factors....