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Mathematics 21 Online
OpenStudy (anonymous):

Can someone walk me through this problem?

OpenStudy (anonymous):

\[12x^5y^4z +8x^3y^2 + 2x^3y\]

hartnn (hartnn):

you need to factor it ?

OpenStudy (anonymous):

I got: \[2x^3y(6x^2y^3 + 4y)\] But apparently it was wrong?

hartnn (hartnn):

where did 'z' go from the 1st term ?

hartnn (hartnn):

and where did the last term go ?

OpenStudy (anonymous):

Ohhh. I just double checked my work, and I forgot to add the z, and the last term didn't have anything left, unless I'm just supposed to write as + 1 in the problem?

hartnn (hartnn):

yes

hartnn (hartnn):

its like ab+a = a (b+1)

OpenStudy (anonymous):

Okay, so \[2x^3yz(6x^2y^3 + 4y + 1)\]?

hartnn (hartnn):

the z isn't common to all terms, right ? so it will not factor out \(2x^3y(6x^2y^3z + 4y+1)\)

hartnn (hartnn):

it will stay in the 1st term

OpenStudy (anonymous):

Oops, okay. Thank you!

hartnn (hartnn):

welcome ^_^

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