1. (a+x)²=
2. (y-2)²=
3. ( 2a+1)²=
4. (3c-2)²=
5. (7-a)²=
6. (x²+1)2=
7. (a²+3x)²=
8. ( c²+a²)²=
9. (a³+3b)²=

1)(а+х)²=а²+2ах+х²

2)(у-2)²=у²-4у+4

3)(2а+1)²=4а²+4а+1

4)(3с-2)²9с²-12с+4

5)(7-а)²=49-14а+а²

6)(х²+1)=х⁴+2х²+1

7)(а²+3х)=а⁴+6а²х+9х²

8)(с²+а²)=с⁴+2а²с²+а⁴

9)(а³+3b)=a6+6a³b+9b²