FACTORS AND PRIME FACTORS

(1)  List all the factors and prime factors of each of the following numbers.

Number	Factor	Prime Factor
12
15
32
48
52
68

(2)  Circle the prime factors of each of the following numbers from the list of factors given.

Number	Factor
20	1, 2, 4, 5, 20
42	1, 2, 3, 6, 7, 14, 21, 42
28	1, 2, 4, 7, 14, 28
36	1, 2, 3, 4, 6, 9, 12, 18, 36
110	1, 2, 5, 10, 11, 22, 55, 110

PROBLEM SOLVING OF WHOLE NUMBERS

Example 1 : 
In a Mathematics quiz, 4 marks were given for every correct answer and 2 marks were deducted for every wrong answer.  Suraya answer 30 questions and 24 of them are correct. She answered the rest wrongly. How many marks did she get?

Solution:
Correct = 24 x 4 = 96
Wrong = 6 x 2 = 12

Suraya's marks = 96 - 12 = 84

PEMFAKTORAN JENIS 4 : ab + ac + bd + cd

NOTA

ab + ac + bd + cd

= a(b + c) + d(b + c)

= (b + c)(a + d)

Contoh 1: Faktorkan selengkapnya ungkapan algebra berikut

xy + 2x + 3y +6

Penyelesaian

xy + 2x + 3y +3x2
= x(y + 2) + 3(y + 2)
= (y + 2)(x + 3) 

Contoh 2: Faktorkan selengkapnya ungkapan algebra berikut
2mn - 4mp - 3qn + 6qp

Penyelesaian

2mn - 4mp - 3qn + 6qp

= 2m(n - 2p) -3q(n - 2p)

= (n - 2p)(2m - 3q)

SUDUT POLIGON : Mengenal Pasti dan Menentukan Nilai Sudut Pedalaman dan Sudut Peluaran