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Sagot :
Answer:
(12)^2=(n+1)^2
12=n+1
12-1=n
n=11
Step-by-step explanation:
another one
(12)^2-(n+1)^2=0
(12-n-1)(12+n+1)=0
either:-
n=11 or n=-13
[tex]~~~(n+1)^2 =144\\\\\implies n+1= \pm\sqrt{144}\\\\\implies n+1 = \pm12\\\\\implies n = \pm12 -1\\\\\text{Hence,}~ n = 11 ~\text{and}~ n = -13[/tex]
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