TA 89 Graphing Calculator: Multiplying Expressions

This tutorial guides users on multiplying expressions using the TI-89 graphing calculator. It covers setting up a new problem, using the expand function, handling errors, and provides advanced examples. The tutorial emphasizes the importance of correct syntax to avoid errors and demonstrates how to achieve accurate results.

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

• Press F6 and select option 2

• Press F2 and select option 3

• Press F5 and select option 4

• Press F1 and select option 1

Which menu option is used to access the expand function?

• F2

• F3

• F4

• F1

What is the result of multiplying 2x^3 by 5x^7 using the expand function?

• 10x^10

• 15x^10

• 10x^9

• 5x^10

What error might occur if you don't include multiplication between terms?

• Syntax error

• Overflow error

• Invalid implied multiplication

• Division by zero

How can you correct an 'invalid implied multiplication' error?

• Add a division sign

• Add a multiplication sign

• Remove parentheses

• Add a subtraction sign

What is the expanded form of (Z - 4)^2?

• Z^2 - 8Z + 16

• Z^2 - 4Z + 8

• Z^2 - 16Z + 8

• Z^2 + 8Z + 16

Which key combination is used to input the variable 'a'?

• Alpha + F2

• Alpha + minus sign

• Alpha + equal sign

• Alpha + F1

What is the result of expanding the expression 8 + 2(a^2 - 2a + 4)?

• a^3 + 2a + 8

• a^3 + 8

• a^3 + 2a^2 + 8

• a^3 + 4a + 8

What is the purpose of the expand function in the TA 89 calculator?

• To simplify expressions

• To multiply expressions

• To add expressions

• To divide expressions

What should you do if you encounter an error while using the expand function?

• Check for missing operations

• Restart the calculator

• Press F1 for help

• Remove all parentheses