I suck at math!!!!

10-11-06, 10:33 PM

God I hate algebra!!!

Anyone know how to do this stuff? It's been like 10+ years since I've seen this stuff!

Evaluate and Simplify the problem

x2y – 3x – y when x = -1 and y = 1

10-11-06, 10:34 PM

Also, does anyone know of any good math websites where you can enter problems like these and get the answers and where it shows you how it solved the problem?

Kapitan · 10-12-06, 12:31 AM

www.bbc.co.uk/bitesize

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)

goldorak · 10-12-06, 01:27 AM

Quote:

Originally Posted by lesrae

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)

Strange, by convention numerical factors are always written before the variables so x2y should really be written 2xy.
Otherwise it could be interpreted as x^2*y.

The Noob · 10-12-06, 03:26 AM

@SubSerpent

I suck at math too. Badly. :p

10-11-06, 10:33 PM	#1
SubSerpent Stowaway Posts: n/a Downloads: Uploads:	I suck at math!!!! God I hate algebra!!! Anyone know how to do this stuff? It's been like 10+ years since I've seen this stuff! Evaluate and Simplify the problem x2y – 3x – y when x = -1 and y = 1 Last edited by SubSerpent; 10-11-06 at 11:06 PM.

10-11-06, 10:34 PM	#2
SubSerpent Stowaway Posts: n/a Downloads: Uploads:	Also, does anyone know of any good math websites where you can enter problems like these and get the answers and where it shows you how it solved the problem? Last edited by SubSerpent; 10-11-06 at 11:09 PM.

10-12-06, 12:31 AM	#3
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,131 Downloads: 77 Uploads: 7	www.bbc.co.uk/bitesize __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/

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

10-12-06, 03:26 AM	#6
The Noob The Old Man Join Date: Sep 2005 Location: de_dust2 Posts: 1,417 Downloads: 0 Uploads: 0	@SubSerpent I suck at math too. Badly. :p