Question

If x = 2+√3, y = 2-√3 find the value of (2.5 Points)​

Answer 1

please post the total question, this is not fill

Answer 2

QUESTION:

If x = 2-√3, then what is the value of x³ - 1/x³?

ANSWER:

Ans is - 30√3

Explanation :-

It is given that , x = 2 - √3

Then 1/x = 1/(2 - √3) = (2+√3)/(4–3) = 2+√3

Now, x - 1/x = 2 - √3 - 2 - √3 = - 2√3

Therefore , x³- 1/x³

= ( x - 1/x )³+ 3 * x * 1/x ( x - 1/x )

= (- 2√3)³+ 3 ( -2√3 )

= - 24√3 - 6√3

= - 30√3

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