Solve the Equation in the Real Number System $x ^ { 4 } - 21 x ^ { 2 } - 100 = 0$

question 97

Multiple Choice

Solve the equation in the real number system.
- $x ^ { 4 } - 21 x ^ { 2 } - 100 = 0$

• A) \(\{ - 5,5 \}\)
• B) \(\{ - 5 , - 2,2,5 \}\)
• C) \(\{ - 10,10 \}\)
• D) \(\{ - 2,2 \}\)

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Definitions:

Sum

An aggregate function that calculates the total sum of a numeric column in a database table.

Form Events

Triggers in form controls, such as buttons or text fields, that execute specified actions or code when certain conditions are met.

Command Button

A graphical control element in software that performs a specific action or command when clicked by the user.

Command Button

A button in a graphical user interface that, when clicked, sends a command to the software to perform a specific task.