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EbrahimHashem
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Algabra Question
Source: Beat The GMAT — Data Sufficiency |
E
(1) is insufficient .. Doesn't give us a value of x+y
(2) is also insufficient. Taking a square root of both sides gives us 2 values for x+y (8 and -8)
Subbing in x=y-4 into eqn 2 gives us two values for y as well. So no solution exists.
(1) is insufficient .. Doesn't give us a value of x+y
(2) is also insufficient. Taking a square root of both sides gives us 2 values for x+y (8 and -8)
Subbing in x=y-4 into eqn 2 gives us two values for y as well. So no solution exists.
