SOLUTION: please help me factor this factor the expression 9x^3+72=

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Question 753087: please help me factor this factor the expression 9x^3+72=
Found 2 solutions by lenny460, MathTherapy:
Answer by lenny460(1073) About Me  (Show Source):
You can put this solution on YOUR website!
Please help me factor this factor the expression 9x^3+72=

The above expression is Prime. It cannot be factored.








Lennox Obuong
Algebra Tutor
Nairobi, Kenya
Email: obuong3@aol.com

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!

please help me factor this factor the expression 9x^3+72=

9%28x%5E3+%2B+8%29

9%28x%5E3+%2B+2%5E3%29

highlight_green%289%28x+%2B+2%29%28x%5E2+-+2x+%2B+4%29%29 ----- Applying the sum of cubes formula