(-а-х)^2. (-b-y)^2. (-z-c)^2. (-2-n)^2. (-3-m)^2 (2n+1)^2 Решите

1.(-а-х) ^2=а^2-2ах+х^22.(-b-y)^2=b^2-2by+y^23.(-z-c)^2=z^2-2zc+c^24.(-2-n)^2=4-4n-n^25.(-3-m)^2=9-6m+m^26.(2n+1)^2=4n^2+4n+1