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OpenStudy (anonymous):
simplify. (z^4+2z^2)-(3z^4+z^3+3z^2)
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OpenStudy (anonymous):
open brackets: z^4+2z^2-3z^4-z^3-3z^2 then simplify: -2z^4-z^3-z^2
OpenStudy (anonymous):
thanks
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