identify the roots of -3x^3-21x^2+72x+540=0. State the multiplicity of each root.

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23-02-2018
Mathematics

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identify the roots of -3x^3-21x^2+72x+540=0. State the multiplicity of each root.

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jcherry99 jcherry99 · Answer 1 · 2018-02-23T16:23:30+01:00

jcherry99 jcherry99

23-02-2018

y = -3(x^3 + 7x^2 - 24x - 180) Taking that three out makes your life a whole bunch easier.
y = -3*(x - 5)*(x+6)^2
(x - 1) has a multiplicity of 1 and (x + 6) has a multiplicity of 2 <<<=== answer
The graph can be found at wolframalpha
google it.

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