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Ilya [14]
3 years ago
6

If (x^2+1)/x = 7 find x^2+(1/x^2)

Mathematics
1 answer:
White raven [17]3 years ago
4 0

Answer:

x²+(1/x²) = 47

Step-by-step explanation:

by identity : (a+b)² = a²+b²+2ab

(x+1/x)²= x²+(1/x)²+2(x)(1/x)

(x+1/x)²= x²+(1/x²)+2....(1)

since : (x²+1)/x = 7

(x²/x) +(1/x) = 7

x + (1/x )= 7

put the value for : x +(1/x) in (1) :

49 = x²+(1/x²)+2

x²+(1/x²) = 47

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Answer:

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Read 2 more answers
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7.) the equation of the circle is
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You do the same for y coordinates
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So the coordinates of Rachel's house are
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