По теме: Квадрат суммы и квадрат разности
1)(y+4)²=
2)(9+a)²=
3)(a+c)²=
4)(x-7)²=
5)(8-в)²=
6)(11-y)²=
7)(5a+1)²=
8)(3y-4)²=
9)(10+4c)²=
10)(2x-3y)²=
11)(5a-6в)²=
12)(3х-4у)²=

1) =у²+8у+16

2) =81+18а+а²

3) =а²+2ас+с²

4) =х²-14х+49

5) =64-16в+в²

6) =121-22у+у²

7) =25а²+10а+1

8) =9у²-24у+16

9) =100+80с+16с²

10) =4х²-12ху+9у²

11) =25а²-60ав+36в²

12) =9х²-24ху+16у²