Factorization:

Rules:

1. Common Factors

3a-12=**3**(a-4)

3a^2-5a=**a**(3a-5)

3a^2-12a=**3a**(a-4)

Rule 2: Perfect Square & Difference of 2 squares

Perfect Square:

1.(a+b)^2=a^2+2ab+b^2

2.(a-b)^2=a^2-2ab+b^2

Difference of 2 squares:

1.(a)^2-(b)^2=(a+b)(a-b)

x^2+4x+4=(x)^2+2(x)(2)+(2)^2 (type 1.)

x^2+4x+3=(x)^2+2(x)(2)+(2)^2 -1

square^^^^^^^^^^

=(x+2)^2-1^2

=(x+2+1)(x+2-1)

=(x+3)(x+1)

**(every 1 mark, you have about 1.5minutes to do the question. So if you get a 3 mark question you only have 4.5minutes to do the question

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