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x(x-y) = 0 implies that x = 0 or x = ycramya wrote:I am not sure on the oa?
x^2 = xy
x^2 - xy = 0
x(x-y) = 0
x does not have to be zero x-y could be 0
x=2 y=2
still the expression above is 0
I would say none but there is no choice like that.
Your analysis is perfect, but it's important to read the question very carefully. It says: "if x and y are different integers "... So certainly x -y cannot be zero, since x and y are different, which means x must be zero.cramya wrote:I am not sure on the oa?
x^2 = xy
x^2 - xy = 0
x(x-y) = 0
x does not have to be zero x-y could be 0
x=2 y=2
still the expression above is 0
I would say none but there is no choice like that.
Let’s simplify the given equation:[email protected] wrote:if x and y are different integers and x^2=xy, which of the following must be true?
i. x=0
ii. y=0
iii. x=-y
A) i
B) ii
C) iii
D)i and iii
E) i, ii and iii
