Texas Instrument TI-30Xa will not work

See cap image below

Unfortunately, the TI-30Xa calculator does not handle algebraic expressions.
If you are interested in knowing more about the capabilities of the calculator, follow the link to download the guide book.

http://education.ti.com/educationportal/sites/US/productDetail/us_ti30xa.html?bid=6

Download the guidebooks from the manufacturer's web site at http://education.ti.com/educationportal/downloadcenter/SoftwareList.do?website=US&tabId=2&paneId=18#

Use a small Phillips screwdriver to remove the back of the case.

Hello,
Your calculator has 3 memories (M1, M2,M3)
To store the number 170 in M1 use 170[STO]1
To recall a number from M1 use [RCL]1
To add a number to the content of M1 [2nd][SUM]1 (adds displayed value to contents of M1).
[2nd][EXC] 2 exchanges the value already displayed with the contents of M2:

To erase (clear) a memory register, just store 0 in it.

Hope it helps.

i want to get 250 tan 35 i dont know how?can u tell me plz

Calculator turns on in "degree" mode. Just enter angle in degrees then press "SIN", "COS" "TAN".

Most people work in degrees but you can switch to Rads or Grads to Degrees modes by pressing "DRG" repeatedly with zero displayed, Current angular mode will show in display.

Get a new instruction booklet by download from TI website

look for a key that has this symbol ^ this is often called a carrot. it's somewhere in the middle and on the right. go 10^21

sec 23