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Mathematics 20 Online
OpenStudy (anonymous):

Rewrite without parentheses. −2x^3(6x^3−7x^2-2x) Simplify your answer as much as possible.

OpenStudy (anonymous):

\[-2x^3(6x^3-7x^2-2x)\]

OpenStudy (ashes.boom):

so it helps me to separate the coefficients and the exponents first. so you can multiply -2 by 6 which equals...

OpenStudy (anonymous):

-12 ?

OpenStudy (ashes.boom):

yep and then you can do the same thing for the second part -2 times -7

OpenStudy (anonymous):

-14?

OpenStudy (ashes.boom):

actually a negative times a negative is positive so it would be +14

OpenStudy (ashes.boom):

and then you have -2 times -2

OpenStudy (anonymous):

oh yea true

OpenStudy (anonymous):

4?

OpenStudy (ashes.boom):

yep :) now we have -12 + 14 + 4 right?

OpenStudy (anonymous):

yes

OpenStudy (ashes.boom):

now with the exponents, because you are working with multiplication you will add the exponents okay

OpenStudy (anonymous):

okay would it be -12x^6 + 14x^5 +4x^3 ?????

OpenStudy (ashes.boom):

Yea! goodjob :D

OpenStudy (anonymous):

thanks so much

OpenStudy (ashes.boom):

one thing is that the last term should be x to the 4th because a regular x has an exponent of 1 so adding three would get 4 but other than that perfect :)

OpenStudy (anonymous):

okay thanks it would be 4x^4 than ?

OpenStudy (ashes.boom):

yep! your wwelcome :)

OpenStudy (anonymous):

thanks your the best

OpenStudy (ashes.boom):

aww thank you if you need more help you know where i am ;) good luck with the rest

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