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Mathematics 18 Online
OpenStudy (anonymous):

Divide by polynomial to monomial.

OpenStudy (anonymous):

(4xy^3-8x^3y^2-8y^2)/(4xy)

jimthompson5910 (jim_thompson5910):

Hint: you can break up (4xy^3-8x^3y^2-8y^2)/(4xy) to get (4xy^3)/(4xy) - (8x^3y^2)/(4xy) - (8y^2)/(4xy)

OpenStudy (anonymous):

I really want a fully solved example of this. Not a hint.

OpenStudy (anonymous):

Or at least show me step by step.

jimthompson5910 (jim_thompson5910):

Simplify (4xy^3)/(4xy) and tell me what you get

OpenStudy (anonymous):

xy^2 ?

jimthompson5910 (jim_thompson5910):

good

jimthompson5910 (jim_thompson5910):

- (8x^3y^2)/(4xy) simplifies to _____

OpenStudy (anonymous):

2x^2y

jimthompson5910 (jim_thompson5910):

close

OpenStudy (anonymous):

xy^2-2x^2y is the equation?

jimthompson5910 (jim_thompson5910):

yes you have it so far, just one more to do

OpenStudy (anonymous):

2/1x^2y?

jimthompson5910 (jim_thompson5910):

-(8y^2)/(4xy) simplifies to -2y/x

jimthompson5910 (jim_thompson5910):

so (4xy^3)/(4xy) - (8x^3y^2)/(4xy) - (8y^2)/(4xy) turns into y^2 - 2x^2y - 2y/x

jimthompson5910 (jim_thompson5910):

sorry above I meant to say that (4xy^3)/(4xy) turns into y^2 (and NOT xy^2)

OpenStudy (anonymous):

uh...

jimthompson5910 (jim_thompson5910):

where are you stuck?

OpenStudy (anonymous):

the full final equation is y^2-2x^2y-2y/x ?

jimthompson5910 (jim_thompson5910):

correct, it's an expression (not an equation), but you get the idea

OpenStudy (anonymous):

so thats it? O;

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (anonymous):

Oh, Thank you.

jimthompson5910 (jim_thompson5910):

yw

OpenStudy (anonymous):

(4xy^3-8x^3y^2-8y^2)/(4xy) Factor 4y^2 from the top. (4y^2(xy - 2x^3 - 2))/(4xy) Now using Exponent law for division, we can reduce the y^2 to just y in the numerator and we can cancel out the 4. (y(xy - 2x^3 - 2))/(x) You can expand the numerator to get: (-2x^3y + xy^2 - 2y) / (x) That's the final expression. Not much more for you to do. @ikoreanx3

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