Question

Find the sum of these polynomials.

(x2 – x + 8) + (10x2 + 7) =

A. 11x2 – x + 15
B. 10x2 – x + 1
C. 10x2 – x + 15
D. 11x2 – x + 1

Answer 1

x² – x + 8+ 10x² + 7 = 11x²-x+15
answer A

Answer 2

`11x^2-x+15`

A is the correct option.

Explanation:

We have to find the sum of the polynomials
`(x^2-x+8)+(10x^2+7)`

On removing the parentheses, we get

`x^2-x+8+10x^2+7`

Group the like terms

`x^2+10x^2-x+8+7`

Combine the like terms

`11x^2-x+15`

Therefore, the sum of the polynomials is
`11x^2-x+15`

A is the correct option.