10. If a17,then find the value of o + 1 and d+4a2 – InterviewSolution

1.

10. If a17,then find the value of o + 1 and d+4a2

Answer»

a-1/a=7take square in both the sidesa^2-2+1/(a)^2=49so a^2+a^(-2)=51

again take square in both the sidesso a^4+2+a^(-4)=2601so a^4+a^(-4)=2599

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