Question

If x is equal to 3 minus 2 root 2 then find the value of x square - 1 x square

Answer 1

Answer:

-24√2

Step-by-step explanation:

x=3-2√2

1/x=1/(3-2√2)

conjugate of 3-2√2 is..3+2√2

multiply and divide by 3+2√2

1/x=[3+2√2]/[9-8]

=3+2√2

x+1/x=6

x-1/x=-4√2

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

=6(-4√2=

=-24√2