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