Дан многочлен 2a^4-3a^3-a^2+5a-1. Подставьте вместо a: a) 2x б) -x в) 3x^2 г) -2x^3

а) ;
б)
в)
г)

а)-х б)зх² в)₋2х³

3x-7/x^2-9x =

5)5y-19/11y + 6y+8/11y =

6)y+3/y-3 - 9-y/y-3 =

7)12a+b/28a - b-30a/28a =

8)6a-4/2 - 2-3a/2 =

9)b/a-b - a/a-b =

10)5a/a-b - 5b/a-b =

11)m^2/m-5 - 25/m-5 =

12)a^2-47/a+7 - 2/a+7 =

13)m/m^2-n^2 - n/m^2-n^2 =

14)m2/m+n - n^2/m+n =

15)n^2/3n+3m - m^2/3n+3m =

И простро уравнения решить:

1)2x+2y/m+5 * m-25/6x+6y =

2)m+5/m-5 * m^2-25/2m+10 =

3)m-5/x^2-y^2 * 8x-8y/3m-15 =

4)m^2-25/2y+2b / y^2-b^2/2m-10 =

5)3x/x^2+4x * a^2-b^2/3a-3b =

6)m-5/m^2-25 * 2m+10/3m-15 =

7)x^2-16/8x^2 * 4x/x+4 =

8)5-y/y * 7y/y^2-25 =

9)(c+2)^2/2c-6 * c^2-9/5c+10 =

10)m+2/3-3a / m^2-4/5a-5 =

11)x^2-1/12x^2 * 3x/x+1 =

12)2-y/y * 11y^2/y^2-4 =

13)2x-4y/c+3 * 5c+15/x^2-4y^2 =

14)a/y-x * x-y/b =

15)m/x^2-2x * 2x-4/n =

16)1+2a+a^2/n * m/4a+4 =

17)3a+3/1-2a+a^2 * 4a-4/1+2a+a^2 =

18)(a-1)^2/1-a^2 * 5+5a/7 =

19)a-b/xy^6 / b-a/xy^2 =

20)m+2/m+3 / 5m+10/9-m^2 =

21)x^2-4/9-m^2 / x-2/3+m =

22)m^2-n^2/7 * 14/m-n * m/(n+m)^2 =

23)(m-m^2/m+1) *m^2-1/m^2+2m =

24)(2+m/m+1) * 3m^2+3m/12m+8 =

25)4+b/4-b * (2b^2/4+b - b) =

26)(y/y-5 - 2y) / 11-2y/y-5 =

27)m-4/7 * 14/m^2 - n^2 * (m+n)^2/m =

28)x^2-4/9-m^2 / x-2/3+m - 2/3-m =

29)1/x-y * y^2-x^2/x+y =

а) (2a-a^2)-(a^2+2a)
b) (3a^2-a)*(-a)
в) 6x(3-x)-2x(x+9