please can someone solve this question step by step
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please can someone solve this question step by step
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Answer:
Here you go...!!!
Hope this will help you.
Answer:
given a-1/a=4..............(I)
and ais not equal to zero
(a-1/a)2= a2 + 1/a2 -2×a×1/a
(4)2= a2 +1/a2 -2
16+2= a2 +1/a2
18= a2 + 1/a2.............(I)
if we take
(a2 -1/a2)2 = a4 +1/a4 -2×a2×1/a2
(18)2= a4 + 1/a4 -2( fromii)
324+2=a4 + 1/a4
326= a4 +1/a4
similarly,if we take
(x-1/x)3 = a3-1/a3- 3 x×1/x(x+1/x)
(4)3 = a3-1/a3 +3× 4( from eq I)
64+12=a3 -1/a3
76= a3-1/a3