x²+1/x²=14. Find x+1/x
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Answer:
x+1/x = ±4
Step-by-step explanation:
x²+1/x²=14
x²+1/x² +2 = 14+2 (adding 2 to both the sides)
x² +2(x)(1/x) +1/x²= 16
(x+1/x)² = 16
∴ (x+1/x) = ±4
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