Mathematics, 18.02.2020 21:37 chonawilson4

2. Catherine was proving that (2 + y22 - (y) = (x - y) for any x and y.
Her work is shown below.
(x2 + y)2 - (2xy) = (x2 - y)
+ 2x”y2 + y - 2x?y? = (x2 - y2)
+ y = (x + y2)
** + y* = (x2)2 + (y)
x + y = x + y
Circle Catherine's mistake(s) and justify your answer.

Answers: 2

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2. Catherine was proving that (2 + y22 - (y) = (x - y) for any x and y.
Her work is shown below...