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crackgmat007
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Combine:
Consider -2 and -1, you get NO
Consider 4 and 1/2, you get YES
Hence (E)
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Is x^2 + y^2 > 6?
Source: Beat The GMAT — Data Sufficiency |
(1) Expand to get
x^2 + 2xy + y^2 > 6
NS
(2) xy = 2 NS
Combined
x^2 + 4 + y^2 > 6
x^2 + y^2 > 2
so combined NS
Answer E
x^2 + 2xy + y^2 > 6
NS
(2) xy = 2 NS
Combined
x^2 + 4 + y^2 > 6
x^2 + y^2 > 2
so combined NS
Answer E
IMO E.
x^2 + y^2 > 6?
or
(x+y)(x-y) >6?
From A we get,
(x+y)^2>6 or
(x+y)(x+y)>6 not suffic.
From B we get,
xy=2 not suffic.
Together A and B its not suffic.
Hence E.
x^2 + y^2 > 6?
or
(x+y)(x-y) >6?
From A we get,
(x+y)^2>6 or
(x+y)(x+y)>6 not suffic.
From B we get,
xy=2 not suffic.
Together A and B its not suffic.
Hence E.
