2x - 2 = \sqrt{3x^2+13}
Which value(s) of x satisfies the equation above?
I. -1
II. 4
III. 9
(A) I
(B) III
(C) I & II
(D) I & III
(E) I, II, & III
For a discussion of algebraic equations involving radicals, as well as a solution to this question, see this post:
http://magoosh.com/gmat/2013/gmat-math- ... -radicals/
Mike
...
Which value(s) of x satisfies the equation above?
I. -1
II. 4
III. 9
(A) I
(B) III
(C) I & II
(D) I & III
(E) I, II, & III
For a discussion of algebraic equations involving radicals, as well as a solution to this question, see this post:
http://magoosh.com/gmat/2013/gmat-math- ... -radicals/
Mike
...