Practice Test

Q1. Which expression is equivalent to 3x + 4 + 2x?

5x + 4
6x + 4
5x + 6
x + 4

Q2. A student simplifies 4(a + 3). Which result is correct?

4a + 3
4a + 12
a + 12
7a

Q3. Which expression is NOT equivalent to 2(x + 5)?

2x + 10
x + 10
2x + 5 + 5
10 + 2x

Q4. Which pair of expressions are equivalent?

3(x − 2) and 3x − 6
3x − 2 and x − 6
3x − 2 and 3(x − 6)
x − 2 and 2x − 3

Q5. Which expression has the same value as x + x + x?

x³
3x
x²
2x