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prohojiy [21]
3 years ago
8

X+ 1/x =5 what is the value x²+1/x²?

Mathematics
1 answer:
irga5000 [103]3 years ago
3 0
X+ 1/x= 5
⇒ (x+ 1/x)^2= 5^2
⇒ (x+ 1/x)^2= 25
⇒ x^2+ 2(x)(1/x)+ 1/x^2= 25
⇒ (x^2+ 1/x^2)+ 2*1= 25
⇒ x^2+ 1/x^2= 25 -2
⇒ x^2+ 1/x^2= 23

The final answer is 23~
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Answer:

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Step-by-step explanation:

Points scored by collecting 7 coins = 581

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