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.

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Of the 50 us states 4 have names that start with the letter w