Evaluating an expression with one variable ex 8, (-x^2 +1)/3; x = 3

The video tutorial explains how to solve an equation by setting the value of X to 3 and emphasizes the importance of using parentheses to ensure correct calculations. It guides through the order of operations, simplifying the expression step by step, and concludes with the final answer, highlighting equivalent solutions.

What is the initial expression discussed in the video?

• X, ^2 - 1 all multiplied by three

• X, ^2 + 1 all multiplied by three

• X, ^2 - 1 all divided by three

• X, ^2 + 1 all divided by three

Why is it important to use parentheses when substituting values in expressions?

• To make the expression look neat

• To ensure the correct order of operations

• To simplify the expression faster

• To avoid using negative numbers

In the expression discussed, which part is squared?

• The denominator

• Only the number three

• The negative sign and the number

• The entire expression

What is the first step in simplifying the expression according to the order of operations?

• Add the numbers

• Divide the numerator by the denominator

• Simplify the denominator

• Simplify the numerator

What is the final simplified result of the expression?

• 9/3

• -9/3

• 8/3

• -8/3