5x2 6a2y 12a4

25cx2 incase you can't read

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- Jun 14th 2006, 02:26 PMJohnAthaneee, why can't I perform this indicated operation
5x2 6a2y 12a4

25cx2 incase you can't read - Jun 14th 2006, 02:29 PMThePerfectHackerQuote:

Originally Posted by**JohnAthan**

It is a common error.

You have,

$\displaystyle (x+y)^2=(x+y)(x+y)$

Use FOIL and get,

$\displaystyle x^2+xy+xy+y^2$

COmbine,

$\displaystyle x^2+2xy+y^2$ - Jun 14th 2006, 02:35 PMMathGuru
JohnAthan,

Try learning LaTex it is wothwhile here is a LaTex tutorial.

Quote:

Originally Posted by**JohnAthan**