Question

factorise x^3-1
please it's important I will mark brainliest​

Answer 1

Answer:

x³-1 = (x-1)(x²+x+1)

Step-by-step explanation:

x³-1

= x³-1³

= (x-1)(x²+x*1+1²)

/* By algebraic identity:

a³-b³ = (a-b)(a²+ab+b²) */

= (x-1)(x²+x+1)

Therefore,

x³-1 = (x-1)(x²+x+1)

•••♪

Answer 2

a=x,b=1

x^3-1^3

=a^3 - b^3

(a+b)(a^2 - b^2 - ab)

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