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Mathematics 20 Online
OpenStudy (anonymous):

Simplify the following expression, and rewrite it in an equivalent form with positive exponents. -18x^2y^4/6x^7y^2

OpenStudy (anonymous):

\[-18x^2y^4/6x^7y^2\]

OpenStudy (anonymous):

is this what you mean

OpenStudy (anonymous):

YES

OpenStudy (anonymous):

Sorry for the caps

OpenStudy (anonymous):

ok great think of it like this \[-18x*x*y*y*y*y/6x*x*x*x*x*x*x*y*y\]

OpenStudy (anonymous):

I know it looks long but now think about canceling

OpenStudy (anonymous):

okay so when dividing you subtract then right

OpenStudy (anonymous):

yes if you had X^3/x^2 you would have x^3-2

OpenStudy (anonymous):

okay was just trying to figure out how the division part worked for exponents so now I divide -18 from 6 to get 3 right then subtract the like exponents

OpenStudy (anonymous):

yes! but you have one little error. do you see it?

OpenStudy (anonymous):

the negative sign

OpenStudy (anonymous):

yep! good work!

OpenStudy (anonymous):

well from the way the question was worded it said to rewrite with positive exponents

OpenStudy (anonymous):

ah yes the exponent means the power. as in x^5 5 is the exponinet -3 is called the coeffecient in you problem

OpenStudy (anonymous):

okay so I was right when I said the problem I got -3x^5y^2 but it doesn't look right to me

OpenStudy (anonymous):

I see what you mean the simplied version will be-3x^-5y^2

OpenStudy (anonymous):

like this \[-3y^2 / x^5\]

OpenStudy (anonymous):

okay is that the way it is supposed to look

OpenStudy (anonymous):

I wasn't sure

OpenStudy (anonymous):

yep! simpfied here means that you did all of the division you could

OpenStudy (anonymous):

remember that x^-3 = 1/(x^3) for example

OpenStudy (anonymous):

one other question when you multiply 2 negatives you get 2 positives correct?

OpenStudy (anonymous):

okay that's right

OpenStudy (anonymous):

Negative * negative = postive

OpenStudy (anonymous):

okay thanks

OpenStudy (anonymous):

np!

OpenStudy (anonymous):

Thank you again for helping me to answer my problem

OpenStudy (anonymous):

I gave you a medal and fanned you also

OpenStudy (anonymous):

No problem anytime!

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