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Mathematics 14 Online
OpenStudy (anonymous):

Solve the following equation x3 + 4x2 + 21 = 0

OpenStudy (anonymous):

you can factor it i think

OpenStudy (anonymous):

no you cant lol

OpenStudy (anonymous):

these are the answer choices -7,0,3 3,7 2,-2,2i,-2i 16,-16 2i,-2i

OpenStudy (anonymous):

\[x^3+4x^2+21=0\]

OpenStudy (helder_edwin):

have you tried Ruffini's rule?

OpenStudy (anonymous):

uhmm wats tht?

OpenStudy (helder_edwin):

i think u call this synthetic division

OpenStudy (helder_edwin):

are you sure about the equation? there's no algebraic way to solve it

OpenStudy (helder_edwin):

plus none of your choices works as a solution have you notices this

OpenStudy (anonymous):

well thats wat they gave me and those are the answrers i have to choose from

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