if x-1/x=21/10 , find the value of x^2+1/x^2
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Answer:
x²+1/x² = 241/100
Explanation:
x-1/x = 21/10 [ given ]
x²+1/x² = (x-1/x)² + 2*x*(1/x)
= (21/10)² - 2
= 441/100 - 2
= (441-200)/100
= 241/100
Therefore,
x²+1/x² = 241/100
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