Question

class 9
Maths
ch 1
those who don't know pls don't reply then​

Answer 1

Answer:

-24 root 3

Step-by-step explanation:

x =2-root 3

1/x =1/2-root3

=(2+root 3) / [(2-root 3) (2+ root 3)]

=(2+root 3) [2 square -(root 3) whole square)

=(2+ root 3) /(4-3)

=2+ root 3......equation (2)

x-1/x = 2-root 3-(2+root 3)

= 2-root 3 -2 -root 3

=-2 root 3.....equation(3)

therefore

(x-1/x) whole cube = (-2 root 3) whole cube

= -24 root 3