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Mathematics 9 Online
OpenStudy (anonymous):

find all the zeros of the equation x^3 − 5x^2 + 16x − 80

OpenStudy (anonymous):

have you tried doing them yourself?

OpenStudy (amistre64):

i would try to determine it with the factors of 80, or by grouping. but i aint none to good at grouping

OpenStudy (anonymous):

(x^3 - 5x^2) + (16x - 80) x^2 (x - 5) + 16 (x - 5)

OpenStudy (amistre64):

80 factors to: 1,80, 2, 40, 4,20, 8, 10, 5, 16

OpenStudy (amistre64):

theres a grouping :)

OpenStudy (anonymous):

si pero las problemas son muy complicadas

OpenStudy (amistre64):

very complicated just menas more brains to expend :)

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

the square root of -16 is 4i rite?

OpenStudy (anonymous):

gracias

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