How many integers x are there such that there is a value of y such that x^1/2=y^1/2 and x≠y? (x doesn't have to be real)
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x ( x ) 2 x = y = ( y ) 2 = y
Since, x = y is the only solution, but that condition is not true. Thus there are no solutions ⟹ 0
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The problem is asking is there is any solution of x such that both x^1/2=y^1/2 and x≠y are satisfied.
We take the first equation: x^1/2=y^1/2
And we take the 2nd power of each: x=y
Uh-oh, that breaks the second rule, which says the following: x≠y
So there are 0 solutions.