Question

Find the roots of the polynomial equation.

-x3 + 5x2 - 11x + 55 = 0

Answer 1

HELP!

Answer 2

since sign changes in f(x) is 3, there is one "real positive root" for sure.

Answer 3

try descartes now :-

test and see if 5 or 11 are zeroes.

Answer 4

so I was right? square root of 11 and -11, and 5

Answer 5

close ! you're right about 5.

Answer 6

i forgot to add i

Answer 7

good work :)

Answer 8

thank you

Answer 9

np :D