91.8k views
1 vote
What is the factored form of x^3 -1

1 Answer

3 votes

Answer:

The factored form of x^3 -1 will be:


x^3-1^3=\left(x-1\right)\left(x^2+x+1\right)

Explanation:

Given the expression


x^3-1

Rewrite 1 as 1³


=x^3-1^3


\mathrm{Apply\:Difference\:of\:Cubes\:Formula:\:}x^3-y^3=\left(x-y\right)\left(x^2+xy+y^2\right)


x^3-1^3=\left(x-1\right)\left(x^2+x+1\right)


=\left(x-1\right)\left(x^2+x+1\right)

Thus, the factored form of x^3 -1 will be:


x^3-1^3=\left(x-1\right)\left(x^2+x+1\right)

User Cam Bruce
by
4.2k points