Free Practice Question
PS · Problem Solving
605-655
Algebra
If x + y = -10 and xy = 16, which of the following statements must be true?
(I) x-y = -6
(II) x^2 + y^2 = 68
(III) (x-y)^2 leaves a reminder of 1 when devided by 7
(I) x-y = -6
(II) x^2 + y^2 = 68
(III) (x-y)^2 leaves a reminder of 1 when devided by 7
Answer Choices
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I only
B
II only
C
III only
D
I and II
E
II and III
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Explanation
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Difficulty
605-655
Type
PS
Category