Выполните действия:
1) c+d/2a + 2c-d/2a;
2) a+2b/3c² + 5a-2b/3c²;
3) a+b/2c - a-b/2c;
4) 10a-b/a³ - 3a-b/a³;
5)(1+b)²/5d + (1-b)²/5d;
6) (2+a)²/a²b - (2-a)²/a²b.

Ответ:

1) c+d/2a+2c-d/2a=c+d+2c-d/2a=3c/2a

2) a+2b/3c^2+5a-2b/3c^2=a+2b+5a-2b/3c^2=6a/3c^2

3) a+b/2c-a-b/2c=a+b-a+b/2c=2b/2c

4) 10a-b/a^3-3a-b/a^3=10a-b-3a+b/a^3=7a/a^3

5) (1+b)^2/5d+(1-b)^2/5d=1+2b+b^2+1-2b+b^2/5d=2+2b^2/5d

6) (2+a)^2/a^2×b-(2-a)^2/a^2×b=4a/a^2×b