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(x^2 - y^2) / (x - y)

Apply the difference of squares formula:

(x + y)(x - y) / (x - y)

Assuming x is not equal to y, we can cancel terms leaving

x + y

When x = y, the denominator becomes 0, and the equation gives no information.

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12y ago

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Q: What is X squared minus y squared divided by x minus y?
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