1)8⋅m⋅n+n2+16⋅m2= n^2+8mn+16m^2=(n+4m)^2
2)16⋅m2−40⋅m⋅n+25⋅n2= (-4m)^2+2*(-4)*5*m*n+(5n)^2=(5n-4m)^2
или же
16⋅m2−40⋅m⋅n+25⋅n2= (4m)^2+2*4*(-5)*m*n+(-5n)^2=(4m-5n)^2
1)8⋅m⋅n+n2+16⋅m2= n^2+8mn+16m^2=(n+4m)^2
2)16⋅m2−40⋅m⋅n+25⋅n2= (-4m)^2+2*(-4)*5*m*n+(5n)^2=(5n-4m)^2
или же
16⋅m2−40⋅m⋅n+25⋅n2= (4m)^2+2*4*(-5)*m*n+(-5n)^2=(4m-5n)^2