Question

Find the sum of these polynomials.

(x²-x+ 7) + (9x² + 6) =

A. 9x²-x+13

B. 10x²-x+1

C. 10x²-x+13

D. 9x²-x+1

Answer 1

C. 10x²-x+13

Explanation:

1. Add the numbers

x^2 - x + 7 + 9x^2 + 6

x^2 - x + 13 + 9x^2

2. Combine like terms

x^2 - x + 13 + 9x^2

10x^2 - x + 13

Answer 2

C

Explanation:

add the two x^2 parts = 10 x^2

so answer is B or C

add the constants 7 + 6 = 13 so answer C