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Mathematics 15 Online
OpenStudy (anonymous):

I need help please! Can anyone break this down for me by showing all the work. Perform the indicated operation: 21x^5-56x^4+28x^8/7x^4

OpenStudy (anonymous):

\[21x^5-56x^4+28x^8/7x^4 \rightarrow 21x^5-56x^4+28x^4/7\] \[\rightarrow 21x^5-56x^4+4x^4 \rightarrow 21x^5-52x^4\] factorising gives; \[x^4 (21 x-52)\] Enjoy

OpenStudy (anonymous):

I think the 7x^4 is supposed to be divided into everything

OpenStudy (anonymous):

yes......

OpenStudy (anonymous):

(21x^5-56x^4+28x^8)/(7x^4)

OpenStudy (anonymous):

So just do 1 at a time, first one is 21x^5/7x^4 u do 7 into 21 and subtract the bottom from top exponents =3x

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