Question

sqrtx^2-2x+1

Answer 1

give more explanation about your exercise

Answer 2

collect like radicals terms under assumption that all radicals are non negative numbers

Answer 3

\[\sqrt{x^2-2x+1}\]

Answer 4

All the radicands (what is under the square root) must be positive or at least zero
We'll have to solve the inequality:
x^2 - 2x + 1 >= 0
But x^2 - 2x + 1 is a perfect square:
x^2 - 2x + 1 = (x-1)^2, which is always positive, except for x = 1, when x^2 - 2x + 1 = 0