Identify the following as an expression or an equation.(4 points)

Question

Expression Equation
2x−5=4

21⋅−3x

−3x3=82

5x2−8x+2

Answer 1

Let's identify each item as either an expression or an equation:

1. 2x - 5 = 4: This is an equation because it contains an equals sign (=).

2. 21 ⋅ -3x: This is an expression because it does not contain an equals sign.

3. -3x^3 = 82: This is an equation because it contains an equals sign.

4. 5x^2 - 8x + 2: This is an expression because it does not contain an equals sign.

To summarize:

• 2x - 5 = 4: Equation
• 21 ⋅ -3x: Expression
• -3x^3 = 82: Equation
• 5x^2 - 8x + 2: Expression