OAR OAR Math Skills: Algebraic Expressions 3

Question 1

Simplify: (2x + 3)(x - 4)

Accepted Answer

2x² - 5x - 12

Answer

2x² + 5x - 12

Answer

2x² - 5x + 12

Answer

2x² - x - 12

Question 2

What is the value of 3x² - x + 4 when x = -1?

Accepted Answer

8

Answer

6

Answer

2

Answer

0

Question 3

Which expression represents 'six less than twice a number n'?

Accepted Answer

2n - 6

Answer

6 - 2n

Answer

2n + 6

Answer

6n - 2

Question 4

Simplify: 5x - 2(3 - x)

Accepted Answer

7x - 6

Answer

3x - 6

Answer

7x + 6

Answer

3x + 6

Question 5

Factor completely: x² - 9

Accepted Answer

(x+3)(x-3)

Answer

(x-3)²

Answer

(x+9)(x-1)

Answer

(x-3)(x-3)

Question 6

If 3(x - 2) = 15, what is x?

Accepted Answer

7

Answer

5

Answer

9

Answer

3

Question 7

Which expression is NOT equivalent to 12x²y?

Accepted Answer

4xy · 4xy

Answer

3x · 4xy

Answer

2x · 6xy

Answer

12x²y¹