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goru63:
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we have been given the value of v+1/v i.e. 5
We have to find correct answer i.e.
1) squaring both the sides
(v+1/v)^2 = (5)^2
Using (a+b)^2= a^2 + b^2 + 2ab
v^2 + 1/v^2 + 2(v×1/v)=25
v^2+1/v^2=23
2) not possible because we have found the value of v^2 + 1/v^2 = 23 that is not equal to 27
3) now we will square the 1st part
i.e. (v^2 + 1/v^2)^2= (23)^2
v^4 + 1/v^4 +2(v^2×1/v^2) = 529
v^4 + 1/v^4 = 527
hence 1st 3rd and 4th part satisfy this question.
please mark it as branliest
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