Revision on Chapter 1,2,3,4 Maths Form 2

Determine the patterns

-10, -4, 2, 8, ...

• add 6 to previous number

• add 9 to previous number

• multiply 3 to previous number

• minus 5 to previous number

This sequence starts with 0, 1, 1 and the next term is obtained by adding the previous two terms.

This statement describes of?

• odd number

• even number

• Pascal Triangle

• Fibonacci Number

Complete the patterns given

7 , 13 , ___ , 25 , ____

• 20, 32

• 15, 21

• 19, 31

• 17, 42

What is the next pattern?

• 
• 
• 
• 

Given a sequence is as follows:

-9, -11, -13, -15, -17, ... ...

T₄ =

• -11

• -15

• -13

• -17

Expand:

7x (x - 1) - 3

• 7x² - 1 - 3 = 7x² - 4

• 7x² - 7x - 21

• 7x² - 7x - 3

• x² - 7x - 15

Which of the following is true?

• (a + b) (a - b) = a² - 2ab + b²

• (a-b)² = a² - b²

• (a - b)² = a² - 2ab - b²

• (a + b)² = a² + 2ab + b²

Factorise pq + qr + ps + rs

• 
  (p+q)(p+s)(r+s)

• (q+s)(p+r)

• (r+p)(q+s)(p+q)

• (p+q)(r+s)

Expand:

(3r-2s)(r-2s)

• 3r²−2s+4s²  

• 3r²−8rs+4s²

• 3r²−8r+4s²

• 3r²−8s+4s²