Question

if X square+1/x square=51,find the value of x cube+1/x cube

Answer 1

Answer:

Step-by-step explanation:

(x - 1/x)^2 = x^2 - 2 + 1/x^2.

But x^2 + 1/x^2 = 51.

Thus, (x-1/x)^2 = 51 - 2 = 49.

Therefore, x-1/x = sqrt (49) = +/-7

x-1/x = +/-7.

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Answer 2

hope you will get....