ACT SAT Prep Learn how to evaluate an expression for a given value
Interactive Video
•
Mathematics
•
11th Grade - University
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
The video tutorial explains how to solve a given algebraic expression by first finding the value of X. The teacher guides through the process of isolating X in the equation 3X + 4 = -5, resulting in X = -3. The importance of using parentheses in calculations is emphasized to ensure correct order of operations. Finally, the expression X^2 - 4X is evaluated by substituting X = -3, leading to the final answer of 21.
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2 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Why is it important to use parentheses in mathematical expressions?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the final answer after evaluating the expression with the value of X?
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