Math
Physics
100

factorise this fully x2+3x-21

x=-7, x=3

100

dfgdfgd

dfgdd

200

asdsaasf

sdas

200

dfgfdgsgdsr

sdesfdfs

300

asdasadawfdq

fgdgd

300

sgert3rte

nfnfghgf

400

drgegdfg

dfgdfgd

400

htmyjmyh

hjgtthg

500

dfgethrh

fghnfggnf

500

fghjfgjfgj

k,jh

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