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Mathematics 21 Online
OpenStudy (anonymous):

Find the difference of (−5x^2 − x^3 − 3) − (9x^3 + 3x − 6x^ . Do not give me the answer, I just need to know how to get it started please :) I am kind of rusty Find the difference of (−5x^2 − x^3 − 3) − (9x^3 + 3x − 6x^ . Do not give me the answer, I just need to know how to get it started please :) I am kind of rusty @Mathematics

OpenStudy (anonymous):

Perform arithmetic only on the equal powers of x,for example you can combine − x^3 and − 9x^3 to -10x^3

OpenStudy (anonymous):

thank you! :)

OpenStudy (hoblos):

=-5x^2 - x^3 -3 -9x^3 - 3x + 6x^2 =-10x^3 +x^2 -3x -3

OpenStudy (hoblos):

is the last one 6x^2 ??

OpenStudy (anonymous):

yes :p sorry i missed that one

OpenStudy (hoblos):

don't worry i guessed it

OpenStudy (anonymous):

you guessed right because the answer is correct :) I just checked it

OpenStudy (hoblos):

so it was a good answer :D

OpenStudy (anonymous):

yes :) Thank you lol I didnt need the whole answer though. I never do :D

OpenStudy (hoblos):

lol

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