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Alja [10]
3 years ago
13

Find the sum of these polynomials

Mathematics
1 answer:
Nuetrik [128]3 years ago
7 0
Hi there! The answer is B.

( {x}^{2}  - x + 7) + (9 {x}^{2}  + 6)
First we work out the parenthesis, which is easy because we can just remove them.

{x}^{2}  - x + 7 + 9 {x}^{2}  + 6
Now rearrange our expression (in order to collect terms later).

{x}^{2}  + 9 {x}^{2}  - x + 7 + 6
Next up is collecting the terms.

10 {x}^{2}  - x  + 13
The answer is B.

~ Hope this helps you!



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