Question

с^2-2cm+m^2

9+6c+c^2

81c^2-36cm+4m^2

25c^2+10cm^2+m^4

 квадрат двучлена

^степень

Answer 1

(c-m)^2
(3+c)^2
(9c-2m)
(5c+m^2)