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paradox_liru
Joined: 18 Oct 2007
Posts: 1
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 Posted: October 18, 2007 4:56 PM Post subject: Simplifying and Adding Square Roots on TI-89 |
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Hello,
I was wondering how to use the TI-89 to simplify square root problems, such as adding sqrt(3)+ and 4 sqrt(3) to get 5 sqrt(3) ..Also, is there a way to simplify radical expressions?
I'm new at the TI-89 and would appreciate your help.
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mellamokb
Joined: 10 May 2007
Posts: 124
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| Posted: October 22, 2007 9:42 PM Post subject: |
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Hi paradox_liru,
Welcome to TI-89 Forums!
The TI-89 can natively add square roots together and simplify radicals. Simply enter the expression you would like to see evaluated, and the calculator should give you a simplified version.
The square root symbol can be found by pressing [2ND]+[*]. Try entering the expression you wrote on your calculator:
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sqrt(3) + 4*sqrt(3)
OUT: 5*sqrt(3)
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You should get 5*sqrt(3) as expected. You can also do problems like this:
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sqrt(243)
OUT: 9*sqrt(3)
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NOTE: sqrt() is not a valid function on the calculator, I'm just using sqrt() because there is no sqrt symbol I can type here. Use [2ND]+[*] to get a square root symbol.
Hope this helps!
~ mellamokb |
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