Expert Answers

An illustration of the letter 'A' in a speech bubbles

sqrt(x^2 - 4x + 4) = 0

Let us rewrite:

x^2 - 4x + 4 = (x-2)^2

==> sqrt(x-2)^2 = 0

==> x-2 = 0

==> x =2

Approved by eNotes Editorial Team