Question

Is there an easy way to factor the following?

x^3-27

Answer 1

Yes. Use the identity \(a^3-b^3 = (a-b)(a^2+ab+b^2)\)

Answer 2

and if it's x^3+27?

Answer 3

\(a^3+b^3 = (a+b)(a^2-ab+b^2)\)

Answer 4

Thanks!

Answer 5

Welcome :)