Răspuns:
(2a+3)^2
(5x+1)^2
(3x-4)^2
(1/2m-2n)^2
(9a-b)^2
(y-1)^2
(4a+b)^2
(10x+y)^2
(7x+2y)^2
(2a-b)^2
(3a-1/6b)^2
(2x-1/5)^2
Explicație pas cu pas:
