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jenyasd209 [6]
3 years ago
13

Find the sum of these polynomials.

Mathematics
1 answer:
Marina86 [1]3 years ago
7 0
The correct answer is:  [C]:  " 11x⁹  − x  + 15 "  .
___________________________________________________
Explanation: 
___________________________________________________
Given:
___________________________________________________
    "  (x⁹ − x + 8) + (10x⁹ + 7)  " ;    Simplify/ Add.
_______________________________________________________
We can rewrite this as:
 
"  1x⁹ − 1x + 8 + 10x⁹ + 7 = ?

 →  {The "1" is implied; since "1", multiplied by any value, results in the exact same value.}.

Combine the "like terms" :

  + 1x⁹  + 10x⁹ = 11x⁹ ; 
 
  + 8 + 7 = 15 ; 

and we are left with:  " − 1x " ; which we can rewrite as:  " −x " ; 
_________________________________________________
So, we can write our answer as:
_________________________________________________

→  " 11x⁹  − x  + 15 "  ;

   →  which is:  "Answer choice:  [C]:  " 11x⁹  − x  + 15 "  ;
_________________________________________________
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