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Re: If x and y are integers, what is the value of (x-y)^2? [#permalink]

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30 Jul 2017, 23:44

Is it C? Statment one tells that two values are 1 and - 5 or -1 or 5 and statement 2 tells which one if greater. Taking any value of x as 1 or 5 we get one asnwer for x-y and that is 6

Push yourself again and again. Don't give an inch until the final buzzer sounds. -Larry Bird Success isn't something that just happens - success is learned, success is practiced and then it is shared. -Sparky Anderson -S

Push yourself again and again. Don't give an inch until the final buzzer sounds. -Larry Bird Success isn't something that just happens - success is learned, success is practiced and then it is shared. -Sparky Anderson -S

Re: If x and y are integers, what is the value of (x-y)^2? [#permalink]

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02 Jan 2018, 02:05

Question is asking value of (x-y)^2 = x^2 + y^2 - 2xy (1) Sufficient: xy = -5, Now, one has be positive and other negative. Possible values of x and y respectively are: (1,-5), (-1,5), (5,-1), (-5,1). => x^2 + y^2 - 10. Now all the possible values of x and y will give same answer for x^2+y^2. (2) Insufficient: No data about x and y is given.