Podcast
Questions and Answers
Which of the following is an algebraic expression?
Which of the following is an algebraic expression?
What is the correct order of operations for evaluating algebraic expressions?
What is the correct order of operations for evaluating algebraic expressions?
What is the value of $2a + 3b - 5c$ when $a=4$, $b=2$, and $c=3$?
What is the value of $2a + 3b - 5c$ when $a=4$, $b=2$, and $c=3$?
Study Notes
Algebraic Expressions
- An algebraic expression is a mathematical phrase containing variables, constants, and mathematical operations.
Evaluating Algebraic Expressions
- The correct order of operations is: Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction (PEMDAS).
Evaluating Expressions with Variables
- To evaluate an algebraic expression, substitute the values of the variables into the expression and follow the order of operations.
- Example: $2a + 3b - 5c$ when $a=4$, $b=2$, and $c=3$
- Substitute values: $2(4) + 3(2) - 5(3)$
- Evaluate: $8 + 6 - 15 = -1$
- Therefore, the value of the expression is $-1$.
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Description
Test your knowledge of algebraic expressions with this quiz. Determine the correct order of operations, identify algebraic expressions, and practice evaluating expressions with given values of variables.
