Question

Identify the following as an expression or an equation.
(4 points)
2x3 - 4x2
x =
= 3x² - 4
5 = 25
3x + 2π
Expression
Equation

Answer 1

Let's identify each item you listed:

1. **2x³ - 4x²** - This is an **expression**. It does not include an equals sign.

2. **x =** - This is not a complete equation, but it is intended to be an **equation** since it sets x equal to something (albeit incomplete).

3. **3x² - 4** - This is an **expression** because it does not include an equals sign.

4. **5 = 25** - This is an **equation** because it contains an equals sign.

5. **3x + 2π** - This is an **expression**, as it does not include an equals sign.

In summary:
- **Expressions:** 2x³ - 4x², 3x² - 4, 3x + 2π
- **Equations:** x =, 5 = 25