Number and Algebra Quiz

Consider the expression 2a²-5b+1. Which one of the following statements is true?

• The coefficient of a is 2.
• The constant term is 1.
• The coefficient of b is 5.
• The coefficient of a is 4.

Half the sum of double x and 3 can be written as:

• (2x+6)÷2
• x+3
• (2x+3)÷2
• 2(x-3)÷2

Simplify:
12x+4y-3x

• 9x+4y
• 16xy-3x
• 13xy
• 12x+y

Find the value of 5-3a² given a=2.

• 2
• -1
• -7
• 8

3xy is equivalent to:

• 3+x+y
• xy+2xy
• 3x+3y
• xy

Simplify:
(12ab) ÷ (24a²) 

• 2ab
• b÷2
• (ab)÷2
• b÷(2a)

The expanded form of
2a(3+6b)
is:

• 6a+6b
• 2a+9b
• 6a+6ab
• 6a+12ab

Simplify: 
(3a)÷(6b)

• a÷b
• a÷(2b)
• (2a)÷b
• (ab)÷2

5⁷ x 5⁴ is equal to:

• 5²⁸
• 5³
• 25¹¹
• 5¹¹

Factorise:
3a² - 6ab

• 3a (a-2b)
• 3a² (1-2b)
• 3 (a²-2ab)
• 3a (a-b)