Разложить на множители [tex] d^{3} -d^{2}k-dk^{2}+k^{3}[/tex]

d³-d²k-dk²+k³ =(d³+k³)-(d²k+dk²) = =(d+k)(d²-dk+k²)-dk(d+k)==(d+k)(d²-dk+k²-dk)==(d+k)(d²-2dk+k²)==(d+k)(d-k)²