распишите(5x^2-3x-2)/(5x^2+2x) а потом подставьте х=1/19

Al, Be, Na, Mg атом наиболее лёгкого металла имеет электронную схему: 
а)2 e 8 e 2 e
б) 2 е 8 е 1 е
в) 2 е 2 е
г) 2 е 8 е 3 е

в ромбе с площадью 98 см один из углов равен 150 градусам.найти периметр ромба

6(у-3)-(у-1)=19 решите пожалуйста уравнение.

правильно употребить в скобках глаголов в Past Simple and Past Coutinuous

1. When I (to go) to school the day before yesterday, I met Mike and Pete. They (to talk) and (to laugh). They told me a funny story. soon I (to to laugh), too. I still (to laugh) when we came to school. After school I (to tell) this story at home. My father and mother (to like) it very much. 

2. When we were in the country last summer, I (to go) to the wood one day. In the wood I (to find) a little fox cub. \every day I (to feed) it and (to take) care of it. I (to came) it the whole summer. Now the fox cub is quite tame. It lives in my house.