SOLUTION: please help me to solve this. factoring binomials. factor and check: 3r^3+81s^3 thankyou

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Question 760793: please help me to solve this.
factoring binomials.
factor and check:
3r^3+81s^3
thankyou
Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!

please help me to solve this.
factoring binomials.
factor and check:
3r^3+81s^3
thankyou

3r%5E3+%2B+81s%5E3

3%28r%5E3+%2B+27s%5E3%29

We now need to factor the SUM OF CUBES binomial in the parentheses

3%28%28r%29%5E3+%2B+%283s%29%5E3%29

Applying SUM OF CUBES factorization, we get: highlight_green%283%28r+%2B+3s%29%28r%5E2+-+3sr+%2B+9s%5E2%29%29
You can do the check!!

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