Question

Подробно умоляю.
(4-2b)^2
(3+6c)^2
(1-2k)^2
(5+3t)^2

Answer 1

1) (4-2b)²= 16-4b²

2) (3+6с)²=9+36c²

3) (1-2k)²=1-4k²

4) (5+3t)²=25+9t²