Ответ:

1)(x+3)²=x²+6x+9

2)(4-y)²=16-8y+y²

3)(a+1/2b)²=a²+ab+1/4b²

4)(2m-5)²=4m²-20m+25

5)(7a+6b)²=49a²+84ab+36b²

6)(0,2x-10y)²=0,04x²-4xy+100y²

7)(9m+1/3n)²=81m²+6mn+1/9n²

8)(a²-1)²=a^4-2a²+1

9)(x³-x²)²=x^6-2x^5+x^4

10)(p²+p^4)²=p^4+2p^6+p^8

11)(-11b+2a^5)²=121b²-44a^5b+4a^10

12)(-8-4c)²=64+64c+16c²

13)(1 2/3p+2 2/5q)²=(5/3p+12/5q)²=25/9p²+120/15pq+144/25q²=2 7/9p²+8pq+5 19/25q²

14)(12xy²-x²y)²=144x²y^4-24x³y³+x^4y²

15)(4a^6+3a^4b³)²=16a^12+24a^10b³+9a^8b^6