How to factorise x^3+1?

3 ⤊

2007-05-24 21:47:12 · 3 answers · asked by hey mickey you're so fine 3 in Science & Mathematics ➔ Mathematics

a^3 + b^3 = (a + b)(a^2 - ab + b^2)
x^3 + 1 = x^3 + 1^3 = (x + 1)(x^2 - x + 1)

2007-05-24 21:58:04 · answer #1 · answered by bach 2 · 1⤊ 1⤋

x^3+1^3=(x+1)(x^2-x+1)

2007-05-25 04:51:27 · answer #2 · answered by iyiogrenci 6 · 1⤊ 1⤋

x^3+1 has a root which is -1 so it can be dividide by x+1
so you obtain X^3+1 = (x+1)(x^2-x+1)

2007-05-25 04:55:19 · answer #3 · answered by maussy 7 · 1⤊ 0⤋