1. Factorise using common factors: | |||
a
|
4x − 8 |
f
|
-2m − 2n |
b
|
25p + 30 |
g
|
6x − 12y |
c
|
6x + 21y + 12z |
h
|
-3a + 6b − 9c |
d
|
8r − 16s |
i
|
8p + 8q − 8r |
e
|
100t − 1000s |
j
|
-24c − 27d |
2. Fully factorise: |
|||
a
|
ab − ac |
f
|
xy2 + y − y2 |
b
|
-2st + 2sr |
g
|
x2 − x3 + x4 |
c
|
x + x2 |
h
|
w8 − w4 + w6 |
d
|
3q2 − 12q |
i
|
x(a + 3) + y(a + 3) Common factor? |
e
|
15c2d + 6cd |
j
|
3p + 3q + np + nq |