Factorising

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Factorising

a + b

a x b

4x + 8 = 4 (x+2)

3x + 5

3a + 4b + 2c

Sum

product

factorisation

binomial

trinomial

which two numbers have a product of 20 and a sum of 9?

A

10 and 2

B

3 and 6

C

4 and 5

D

20 and 9

Which two numbers have a product of 20 and a sum of 21?

A

10 and 2

B

20 and 1

C

4 and 5

D

20 and 21

Which two numbers have a product of 20 and a sum of -12?

A

10 and -2

B

10 and 2

C

-10 and -2

D

-10 and 2

Write down in your own words how to factorise a trinomial.

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