Решите пж даю 34 бала
x2 + 2xy + y2
4x2 +4x +1
36 – 12a + a2
1 – 2a +a2
25а²+10а+1
4x2 +12x + 9
1 + y2 – 2y
28xy +49x2 + 4y2
m4 + 2m2n3 + n6
1 – 6c2 + 9c4
100x²+y²+20xy
-28a + 4a2 +49
4x4 – 12x2y2+9y4
4a4– 12a2 +9

онда ошибка

(2х+1)2

aa ok.

(х+у)2(2х+1)2(6-а)2(1-а)2(5a+1)2(2x+3)2(1-y)2(7x+2y)2(m2+n3)2(1-3c2)2(10x+y)2(2a-7)2(2x2-3y2)2(2a2-3)2

1) x2 + 2xy + y2 = (x+y)2

2) (2x+1)2

3) (6-a)2

4) (1-a)2

5) (5a+1)2

6) (4x+3)2

7) (1-y)2

8) (7x+2y)2

9) (m2+n3)2

10) (1-3c2)2

11) (10x+y)2

12) (2a-7)2

13) (2x2+3y2)2

14) (2a2-3)2