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lesrae · 10-12-06, 12:35 AM

Substitute in the values and then do the sum:

x2y – 3x – y when x = -1 and y = 1

= (-1 * 2 * 1) - (3*-1) -1

= -2 - (-3) -1

= -2 + 3 -1

= 0

(I think)

10-12-06, 12:35 AM	#4
lesrae Grey Wolf Join Date: Feb 2004 Location: Somerset, UK. Posts: 932 Downloads: 31 Uploads: 0	Substitute in the values and then do the sum: x2y – 3x – y when x = -1 and y = 1 = (-1 * 2 * 1) - (3*-1) -1 = -2 - (-3) -1 = -2 + 3 -1 = 0 (I think) __________________ DOLPHIN 38