Answers

2014-05-18T15:31:09+05:30
3x³ - 1 x 3
=3x³-3=3(x³-1)=3(x³-1³)      and now simplify by the formulae a³-b³





0
2014-05-18T18:54:32+05:30
3x^3 - x/3
(9x^3 - x)/3
x(9x^2 - 1)/3
x(3x - 1)(3x + 1)/3

1 5 1