Question

The sum of 3x^2+x+8 and x^2-9 can be expressed as:

Answer 1

`4x^2+x-1`

Step-by-step explanation:

Given the polynomials:

`3x^2+x+8\; and\; x^2-9`

Their sum will be:

`\begin{gathered} (3x^2+x+8)+(x^2-9) \\ =3x^2+x^2+x+8-9 \\ =4x^2+x-1 \end{gathered}`