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Mathematics 18 Online
OpenStudy (anonymous):

Help on algebra has to do with factoring polynomials. Pic of problem below

Vocaloid (vocaloid):

still there?

OpenStudy (anonymous):

Yes

OpenStudy (mathmale):

Going to post the actual problem?

OpenStudy (anonymous):

I did its in the attachment

OpenStudy (mathmale):

Unfortunately, I see NO attachment. You'd save yourself valuable time if you'd try again to post the attachment

OpenStudy (anonymous):

Here's the photo again

Vocaloid (vocaloid):

any ideas on what the GCF is? starting hint: all the terms have pi so you can factor that out what else can you factor out?

OpenStudy (anonymous):

Factor out 16?

Vocaloid (vocaloid):

good! that gives us 16pi(x^2 + 4x + 4) so that covers the first part

Vocaloid (vocaloid):

actually

Vocaloid (vocaloid):

can you factor that further?

OpenStudy (anonymous):

Yes the remaining polynomial can be factored to (x+2)(x+2)

Vocaloid (vocaloid):

good! so that covers the first part any ideas on how to find the height?

OpenStudy (anonymous):

So 16pi(x+2)(x+2)

Vocaloid (vocaloid):

yes, that would be the volume for the first part

OpenStudy (anonymous):

I don't really understand how to find height

Vocaloid (vocaloid):

they give you two equations for volume V = 16pi(x+2)^2 and V = pi * r^2 * (h/3) just set them equal to each other and solve for h

OpenStudy (mathmale):

The volume formula is given and includes the variable h, for height. Solve that formula for h (height). Then divide the given volume polynomial by what's left.

OpenStudy (anonymous):

Thank you both so much

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