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Verified Answer :

The solution to the problem is as follows:

(5+x)(5-x) = 7
 
You know that (a+b)(a-b)=a^2 - b^2
 
So, 25 - x^2 = 7
 
(or) -x^2 + 18 = 0
 
(or) x^2 - 18 = 0
 
So, A=1, B=0 and C= -18

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kaitlyncha

The first choice is correct so I hope this helped

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