Factoring Expressions with the TI-89 Graphing Calculator

This tutorial guides users on how to factor expressions using the TI-89 graphing calculator. It covers the setup process, including clearing previous data, and demonstrates factoring various algebraic expressions such as 36x^2 + 9x, y^2 - 25, 21m^2 - 5m - 6, and 8a^3 - 27b^3. Each example is broken down into clear steps, showing how to use the calculator's functions effectively.

What is the first step to start a new problem on the TI-89 calculator?

• Press F5 and select option 4

• Press F6 and select option 2

• Press F2 and select option 3

• Press F1 and select option 1

Which menu option is used to access the factor function on the TI-89?

• F3

• F4

• F1

• F2

What is the factored form of the expression 36x^2 + 9x?

• 3x(12x + 3)

• 9x(4x + 1)

• 12x(3x + 0.75)

• 6x(6x + 1.5)

How can you edit a previous entry on the TI-89 calculator?

• Press F1 and select edit

• Press F2 and re-enter the expression

• Press F3 and select modify

• Use the arrow keys to navigate and edit

What is the factored form of y^2 - 25?

• (y - 15)(y + 10)

• (y - 5)(y + 5)

• (y - 10)(y + 2.5)

• (y - 25)(y + 1)

Which key is used to input the variable 'm' on the TI-89?

• Alpha 5

• Alpha 6

• Alpha 8

• Alpha 7

What is the factored form of 21m^2 - 5m - 6?

• (3m - 2)(7m + 3)

• (3m + 3)(7m - 2)

• (3m - 3)(7m + 2)

• (3m + 2)(7m - 3)

How do you enter the variable 'a' for the expression 8a^3 - 27b^3?

• Alpha equal sign

• Alpha division sign

• Alpha plus sign

• Alpha minus sign

What is the factored form of 8a^3 - 27b^3?

• 2a^3 + 3b^3

• 2a^3 / 3b^3

• 2a^3 - 3b^3

• 2a^3 * 3b^3

What should you do if the factored expression extends beyond the screen?

• Press the left arrow

• Press the right arrow

• Press the down arrow

• Press the up arrow