# Math Help - Explaination?

1. ## 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??

2. 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

3. Thanks.