solve the 13th sum plz fast
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1
Answer:
Step-by-step explanation:
given
a^2-5a-1=0
a^2-5a=1
a^2-1=5a
divide a
i)a-1/a=5
a^2+1/a^2-2=25
a^2+1/a^2=27
II)a+1/a=?
(a+1/a)^2=a^2+1/a^2+2
=27+2=29
a+1/a=sqrt(29)
III) (a^2-1/a^2)
=(a+1/a)(a-1/a)
=27sqrt(29)
Answered by
1
Answer:
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#Here's ur answer...♤♡◇♧
Step-by-step explanation:
Hope this helps u...
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