Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (anonymous):

Factor out the greatest common factor. 3x + 27x^2 A. 3x(9x) B. 3x(x + 9x^2) C. 3x(x + 9x) D. 3x(1 + 9x)

OpenStudy (mathmale):

What have you done so far? What does "greatest common factor" mean to you? Please share your work and explain your reasoning.

OpenStudy (anonymous):

I got A, because the greatest common factor of both numbers is 3, but im kinda confused.

OpenStudy (mathmale):

Is 3 the ONLY factor common to all of the terms of this expression?

OpenStudy (anonymous):

3x

OpenStudy (mathmale):

Can you divide every term of the given expression by 3x?

OpenStudy (anonymous):

yeah, and I think you get x+9x

OpenStudy (mathmale):

But x+9x has x in both terms, doesn't it? 3x is common to both terms of the given expression. There is no greater common factor, is there? So...what is your conclusion? Again, think: which of the four possible answer choices seems to make the most sense?

OpenStudy (mathmale):

Try this division:\[\frac{ 3x+27x^2 }{ 3x }\] and compare the the result to your last answer.

OpenStudy (mathmale):

What is (3x) / (3X) ?

OpenStudy (anonymous):

one

OpenStudy (mathmale):

Right. But you told me earlier that the quotient was x + 9x. Would you still stick with that response, or modify it?

OpenStudy (mathmale):

Again: Which answer is the correct one?

OpenStudy (anonymous):

I would go with D

OpenStudy (mathmale):

Agreed. any further questions or concerns about this math problem?

OpenStudy (anonymous):

No, Thank you, (:

OpenStudy (mathmale):

Glad to interact with you. See you again on OpenStudy. :)

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!