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You can use the Polynomial Root Finder Application to:

• calculate the roots (zeros) of polynomials of degree 1 through 30
• store solutions into lists
• load lists into the application for editing
• graph the polynomial

Select the application.
This is the menu for the application. Select the polynomial root finder.
The Poly Root Finder main screen is displayed. Here you will enter the information about the polynomial and select options for your answer.
Press the key. To access the menu at the bottom of the screen, use the graphing keys below the option.
We will now find the roots for the 2nd degree polynomial equation . Enter the coefficients and press SOLVE.
The solution is shown. To change the coefficients to solve another equation, just select COEF and enter another set of coefficients.
To change to a different degree polynomial, go back to the MODE menu and select another order.
Now we will solve a 4th degree equation with the coefficients shown.
All of these solutions are real numbers.
You can select COEF and change the coefficients. Note that the last two solutions are shown in the complex form. They are not real number solutions.
Selecting STO will allow to choose how you want to store the solutions or the polynomial. You can store the solutions or coefficients to a list. Or, you can store the polynomial to the graph editor and then graph the polynomial.

You can use the Simultaneous Equations Solver Application to:

• find solutions to systems of linear equations
• load matrices with the coefficients to identify the type of solution
  

  Select the application.
  This is the menu for the application. Select the simultaneous equations solver.
  This is the main menu for the simultaneous equation solver. We will solve a 3 by 3 equation.
  This is the system we will solve.
  From the menu, select next and the screen will be there for you to enter the coefficients.
  Enter the coefficients.
  Solve the system.
  If you want to store the matrix, press STO. You can store the system or the matrix.