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Earn +20 ptsQ: If x is rational and y is rational then xy is rational?
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How do you factor x-y plus xy-1?
(x-y) + (xy - 1) = (x - 1)(y + 1)
The sum of two number is 10 and their product is 30 the sum of their reciprocals is?
Suppose the numbers are x and y. The sum of their reciprocals = 1/x + 1/y = y/xy + x/xy = (y+x)/xy = (x+y)/xy = 10/30 = 1/3
What is xy over y in simplest form?
Xy/y = x
What are the factors of xy plus x plus y plus 1?
xy + x + y + 1 = (x + 1)(y + 1).
If x is a rational number and y is a rational number than is x plus y rational?
If both numbers are rational then x plus y is a rational number
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