Question

Find the value of x + 1 by x for the quadratic equation x square - 2 x + 1 is equal to zero

Answer 1

x^2-2x+1=0

x^2-x-x+1

x(x-1)-1(x-1)

(x-1)(x-1)

x=1

now, x+1/x=1+1/1=2/1=2

2 is right answer