SOLUTION: Factor completely. 8x^3

SOLUTION: Factor completely. 8x^3 - 27

Question 384876: Factor completely.
8x^3 - 27
Found 2 solutions by ewatrrr, fcabanski:
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

Hi,
Factoring completely
8x^3 - 27 = (2x)^3 - 3^2
In general: x^3 - a^3 = (x-a)(x^2 -ax + a^2)
In this example: x is '2x'
(2x + 3)((2x)^2 - (2x)(3) + 3^2)
(2x + 3)(4x^2 - 6x + 9 )

Answer by fcabanski(1391) (Show Source): You can put this solution on YOUR website!
The given solution is not correct.

The following is the correct answer.

In this example: x is '2x'

Hope the solution helped. Sometimes you need more than a solution. Contact fcabanski@hotmail.com for online, private tutoring, or personalized problem solving (quick for groups of problems.)
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