Understanding Evaluating Expressions
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Beginner
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Beginner Explanation
Evaluating an expression means replacing each variable with a given value and then performing the operations step by step. For example, to evaluate $x + 5$ when $x = 3$, you calculate $3 + 5 = 8$.
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Practice Problems
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1
Quick Quiz
Single Choice Quiz
Beginner
Evaluate $4x + 9$ for $x = 2$
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2
Real-World Problem
Question Exercise
Intermediate
Teenager Scenario
A recipe requires $2x + 3$ cups of sugar. If you have $x = 4$ cups, how much more do you need?
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3
Thinking Challenge
Thinking Exercise
Intermediate
Think About This
Given $x^2 - 4x + 1$, find the value when $x = 3$
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4
Challenge Quiz
Single Choice Quiz
Advanced
Evaluate $2x^2 + 3x - 5$ for $x = -1$
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Recap
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