# Explaination?

• April 21st 2010, 06:45 PM
BLarson
Explaination?
http://www.glencoe.com/sec/math/alge.../lesson8_1.pdf

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Could somebody please explain example 2, letter b??

Where does the 't' go??
• April 21st 2010, 06:49 PM
harish21
Quote:

Originally Posted by BLarson
http://www.glencoe.com/sec/math/alge.../lesson8_1.pdf

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Could somebody please explain example 2, letter b??

Where does the 't' go??

Its supposed to be $r^2$. They might have typed $t^2$ by mistake
• April 21st 2010, 06:51 PM
BLarson
Thanks.