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Mathematics
OpenStudy (anonymous):

simplify the expression Please? z^2(z^4-z^2)+4z^3(z+1)

OpenStudy (saifoo.khan):

\[\Huge z^6+3 z^4+4 z^3 \]

OpenStudy (anonymous):

z^6 -z^4 +4z^4 +4z^3 z^6 +4z^4 +4z^3

OpenStudy (anonymous):

z^6+3z^4+4z^3

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