Question

if x is equal to 1 minus root 2 find the value of x square minus 1 by x square​

Answer 1

Answer:

x^2+1/x^2 = +1

Step-by-step explanation:

(x+1/x)^2 = (1-√2)^2

x^2+1/x^2-2•1/x•x = 1-√2

x^2-1/x^2-2=-1

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

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