The calculator has a specific key for entering a square, i.e., an exponent of 2. This key is indicated below:

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It is important to remember that in squaring a negative number, the negative must be inside of parentheses. Notice the difference between and as entered below:

Warning: When the x squared key is pressed, only the power appears on the screen. In order to enter , first press 2, then press x squared .


Other exponents may be entered using the ^ key. For example, is entered as:

TI84 key presses

TI84 Screen

 

If there are more than one factor or term in the exponent, we will need to use paratheses. For example, 52+3 must be entered as 5 ^ (2+3):

 



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