Question

if x=2+√3 find x-1/x please send correct answer ASAP ​

Answer 1

Answer:

2√3

Step-by-step explanation:

x=2+√3

1/x = 1/(2+√3) = 2-√3 (from rationalising the denominator by multiplying and dividing numerator by 2-√3)

Therefore, x + 1/x = 2 + √3 - (2 -√3)

=2 + √3 - 2 +√3

=2√3

Hope you understood, if yeah, then plz don't forget to mark my answer as the brainliest.

Answer 2

Answer:

x=2+√3

1/x=1/(2+√3)

=(2-√3)/(2+√3)(2-√3)

=(2-√3)/(2^2-√3^2)

=(2-√3)/(4-3)

=(2-√3)/1

=2-√3

x-1/x=2+√3-(2-√3)=2+√3-2+√3=2√3