27x3 + 9x2 + 3x + 1 = A.   (3x + 1)(9x2 + 1)
B.   3x(3x + 1)2
C.   (3x + 1)3
D.   3x(9x2+1)
E.   (3x + 1)(3x − 1)
F.   (9x2 + 1) + (3x + 1)
                     

[ 3-5384 - op net sinds 23.11.12-(E)-3.11.2023 ]

Translation in   E N G L I S H

See above

Oplossing - Solution

1ste manier :
27x3 + 9x2 + 3x + 1 = 9x2(3x + 1) + (3x + 1) = (9x2 + 1)(3x+1)
2de manier :
27x3 + 9x2 + 3x + 1 = 27x3 + 3x + 9x2 + 1 = 3x(9x2 + 1) + (9x2 + 1) = (3x + 1)(9x2 + 1)