Factorise each of the following expressions completely by taking a common negative factor out.
For the answering Use “/” for fraction “ ^ “ ,for index and Leave space between a number and operation al sign e.g 4(x^2 + 2)
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1) –2x + 4
=
2) –2p – 8
=
3) –9py – 18y
=
4) –11 – 11q
=
5) –3x + 6
=
6) –7m – 7
=
7) –12x + 16xy
=
8) –6m – 12
=
9) –3x – 6
=
10) –2zy + y
–y(2z – 1)
11) –5 – 20p
=
12) –45 + 15a
=
13) –4 – 12x
=
14) –10h + 15
=
15) –6 + 18x
=
16) –p^{2 }– p
=
17) –12a^{2 }– 16a
=
18) –4pq – 16p^{2}
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19) –16p^{2 }– q
=
20) –xy – y
=