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Effectus [21]
3 years ago
11

Which value of a would make the following expression completely factored x2 – a ? A.12. B.36. C.49. D.81

Mathematics
2 answers:
aksik [14]3 years ago
5 0
The answer to the the question is (x-a) (x+a). 
Solution:
             x-a 
             x+a
         -------------
            ax - a
     x2 - ax
-----------------------
    x2 +  0 - a or x2 -a 


Korvikt [17]3 years ago
4 0
The answer is 12.               

12 is not a perfect square like the others.                         
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