Question about Texas Instruments TI-30XA Calculator

# How do I enter 8.65 x10 to seventh power on my TI30XA

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8 . 6 5 EE 7

The EE key is just above the 7 key.

Posted on Sep 09, 2010

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Posted on Jan 02, 2017

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This scientific calculator has a key near the lower edge that is marked with x10^X. You use it to enter the power of 10.
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### I need to express 6.02*10^23 on my ti30xa. How do I do this?

There is key labeled on the body of the calculator as [10 raised to power x]
You press the [2nd] key before.
6.02[*] [ ( ] 23 [2nd][10^x] [)][=]. This is the direct way. Note the parentheses that enclose 10^23.

However, if I had to do it, I would use the commutativity of the multiplaction and enter the power of 10, then multiply by 6.02.
23 [10^x] [*] 6.02 [=]
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6 Yx 4, where Yx is the button with a lowercase y followed by a small superscript x, denoting y to the power of x.

Here's the manual. Try page 6.

http://usm.maine.edu/math/120D/TI30xa.pdf

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### I need to take nth (8,5,4,etc) root on the TI30XA

7th root of 3.4 x10 (exp) 23

Solution:

Try it.

Thanks,
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### How to enter 2.5x10 (exponent 8)/2.25 x10 (exponent5)

Key sequence is:

2.5
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Unless you mean (2.5x10 (exponent 8))/(2.25 x10 (exponent5)), in which case you need to change the last "X" in the sequence to "/", or stick the appropriate brackets into the sequence.

Note that exponents are like trig functions, enter value first, then the operator, so 10 (exponent 8) is entered as "8", "2nd", "10 to power x", just like sin 60 is entered "60", "SIN"

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