Преобразуйте выражения в многочлен.! 1.(x-1)^2 2.(3a-b)^2 3.(5z+t)^2 4.(5x-2y)^2 5.(6m-4n)^2 6.(x+c)^2 7.(a-4)^2 8.(0,2a+b)^2

1.(x-1)^2=x2-2x+1
2.(3a-b)^2=9a2-6ab+b2
3.(5z+t)^2=25z2+10zt+t2
4.(5x-2y)^2=25x2-20xy+4y2
5.(6m-4n)^2=36m2-48mn+16n2
6.(x+c)^2=x2+2xc+c2
7.(a-4)^2=a2-8a+16
8.(0,2a+b)^2=0.04a2+0.4ab+b2