Тема Вынесение общего множителя за скобки 

1)2x+4y
2)7a-7
3)15x-3x2
4)4x+8y
5)5a2+5a
6)14a-20a (во второй)
7)10х-2
8)18x(в 4 степени)-x(во второй)

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My family isn`t big. there   are four of  us: my mum, my  dad, my younger sister, linda, and l. l get on well  with my parents, but l often argue with my sister. l have to share a room with her. linda is only six and she likes to take   my things. It makes me crazy, but my mum always defends her. do you  get on well with the members of your family? have you  got any problems? how do you spend  your free time? please, write  me soon.