Question

if x+1/x=7, findx³+1/x³

with solution ​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

x + 1/x = 7

use cross product

x + 1 = 7x

x - 7x = -1

-6x = -1

6x= 1

x = 1/6

ATQ

(1/6)^3 + 1/(1/6)^3

1/216 + 1/ 1/216

1+216/216/1/216

217/216/1/216

217/216 * 216/1

217

answer is 217

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