Free TI-84 Plus CE Starter Program

October 30, 2026 Martin McSweeney

Quadratic Solver, Algebra Solver, Radical Simplifier & Fraction Converter

Four useful math tools in one free TI-84 Plus CE program. Solve quadratic equations, find numerical solutions to equations in X, simplify square roots, and convert decimals to fractions. Use it to check calculations while studying Algebra 1, Algebra 2, or Geometry.

Download the Free Starter Program

Free direct download. No checkout, discount code, or email signup required.

Download FREE.8xp

Calculator program file (.8xp). Transfer it to your calculator using TI Connect CE.

Compatible calculators: TI-84 Plus CE and TI-84 Plus CE Python.

What Can You Do with This Program?

1. Solve Quadratic Equations

Enter A, B, and C for an equation in the form AX² + BX + C = 0. The Quadratic Solver shows the roots, including nonreal complex roots when applicable, and the discriminant. A second screen gives the vertex and axis of symmetry.

Try it: For 2X² − 3X + 1 = 0, enter A = 2, B = −3, and C = 1. The roots are 1 and 0.5, and the discriminant is 1. The vertex is (0.75, −0.125), and the axis of symmetry is X = 0.75.

The program checks that A is not zero. Decimal root values are rounded to three decimal places.

2. Simplify Square Roots

Enter a whole-number radicand to simplify its principal square root. The tool handles zero, perfect squares, and negative whole numbers using the imaginary unit i.

√(98) = 7√(2)
√(49) = 7
√(−98) = 7i√(2)

Enter whole numbers with an absolute value less than 10¹². Decimal radicands are not supported. This tool shows the principal square root; solving X² = 49 gives both X = 7 and X = −7.

3. Convert Decimals to Fractions

Convert a decimal into fraction form using the calculator's fraction conversion feature.

Try it: Enter 0.375 to get 3/8. For a repeating decimal such as one-third, enter 0.33333333333. A typed decimal is a finite approximation, and the conversion depends on the calculator's precision.

4. Solve Equations Numerically for X

Enter the left and right sides separately, then supply a starting guess. The Algebra Solver searches for a real solution and displays X, the value of each side, and their difference so you can check the result.

Try it: For 4X + 2 = 14, enter 4X+2 as the left side, 14 as the right side, and 1 as the starting guess. The result is X = 3; both sides equal 14, and their difference is 0.

Different guesses can find different roots. For X² = 9, try a guess of 2, then −2. Only one root is found per successful search. Some equations or guesses can cause an error; an error does not prove there is no solution. Always check that an answer is allowed in the original equation.

Help Is Built In

Choose HELP from the main menu for instructions and examples for each tool. Use the calculator's (−) key when entering negative numbers.

How to Install and Open the Program

Click Download FREE.8xp above and save the file to your computer.
Connect your calculator to your computer with its USB cable.
Use TI Connect CE to transfer the file. Follow the installation guide for detailed instructions.
On your calculator, press PRGM, choose TI Basic if prompted, and select FREE. Press ENTER to paste its name, then ENTER again to run it.
Choose a tool from the main menu, or open HELP for examples.