Graduate Record Examinations (GRE) Quizzes Mathematics GRE Problem Solving Quiz

Question:
( √2 - √3 )² =

Option A):
5 - √6
Option B):
1 - 2√6
Option C):
5 - 2√6
Option D):
1
Option E):
1 - √2

Correct Answer is Option C):
5 - 2√6