Question

2/3+√7 then (x-3)^2​

Answer 1

Answer:

Given that,

x=2/(3+√7)

x=2/(3+√7)×(3-√7)/(3-√7)

x=2(3-√7)/(9-7)

x=3-√7

Now,

(x-3)^3=(3-√7-3)^3

=(-√7)^3

=(-√7)^2×(-√7)

=7(-√7)

=-7√7

Hence (x-3)^3=-7√7