What is the range of all the roots of |x^2 - 1| = x ?	Choose the correct choice from the following.
A) 4	B) 3	C) 2	D) 1	E) 0

Rationale: we get 2 quadratic equations here . . 1 ) x ^ 2 - x - 1 = 0 . . . . . . . roots 2 , - 1 2 ) x ^ 2 + x - 1 = 0 . . . . . . . . roots - 2 , 1 inserting each root in given equation , it can be seen that - 1 and - 2 do not satisfy the equations . so value of x for given equation . . . . x = 2 or x = 1 i guess range is 2 - 1 = 1 d
Answer: D