Question

if x + 1/x = 5 , then x² + 1/ x² =​

Answer 1

Answer:

23

Step-by-step explanation:

x + 1/x = 5

squaring both sides,

(x + 1/x)² = 5²

x² + 2*x*1/x + (1/x)² = 25

x² + 1/x² + 2=25

x² + 1/x²=25-2

x² + 1/x²=23

Answer 2

Step-by-step explanation:

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