Question

If x + 1/x = 7, find the value of x^2 + 1/x^2 ?
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Answer 1

Answer:

Sol: x +

1

x

1x = 7 ⇒ (x +

1

x

1x)2 =(7)2 ⇒ (x2+

1

x

2

1x2+ 2) = 49 ⇒ x2+

1

x

2

1x2 = 47 Therefore, x2+

1

x

2

1x2 = 47.

Answer 2

Answer:

47

Step-by-step explanation:

check the photo for steps...