Question

Identify the following as an expression or an equation(4 points)
Expression Equation
2x3−4x2


x=3x2−4


5x=25


3x+2π

Answer 1

Let's differentiate between expressions and equations:

- An **expression** is a combination of numbers, variables, and operators (like addition, subtraction, multiplication, and division) without an equality sign.
- An **equation** is a statement that two expressions are equal, and it contains an equality sign (=).

Now, let's categorize the given items:

1. **2x³ − 4x²** - **Expression**
2. **x = 3x² − 4** - **Equation**
3. **5x = 25** - **Equation**
4. **3x + 2π** - **Expression**

So, in summary:
- Expressions: 2x³ − 4x², 3x + 2π
- Equations: x = 3x² − 4, 5x = 25