if x+1/x=30 find the value of x²+1/x²
Answers
Answered by
44
Step-by-step explanation:
x+1/x=30
(x+1/x)²=900
x²+1/x²+2=900
x²+1/x²=898
Answered by
4
Answer:
- x+1/x=30
- taking whole s,quare both side
- (x+1/x)^2=30^2
- x^2+(1/x)^2+2×x×1/x=900
- x^2+1/x^2=900-2=898
- x^2+1/x^2=898
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