combined operations

This application not only returns the final result of the operation, but returns the resolution process to achieve this result, this will be very useful for many lazy students. "operaciones combinadas" isn't a game of mental arithmetic, your mental hability will be reduced with the usual practice of this activity. "mind live software" recommends solving the operations using your mind, pencil and paper, and of course, don't stop playing "mind calculator training".

http://play.google.com/store/apps/details?id=com.braincalculator

Enter the combined operation with the virtual keyboard and press the PLAY button.

Valid characters are:
0-9 dígits from 0 to 9
( open bracket
) close bracket
+sum
- subtraction
* multiplication
: division
^ power

Examples:
3+(6-2*5)-1+2+(5^5):2
3+(6-2*(5-1*2))-1*3*3
(-3)+(6+(-2^2)*5)-1+2
-3+(6+(-2)*5)-1+(2-9)
3+(6-2*5)-(-10:2)*2+5

If the expression contains invalid characters, a division by zero, syntax errors or simply it can't be solved, it will be displayed the message "invalid operation".

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