Question

solve
3x^4+2x²+9=0

Answer 1

have you tried let \(u=x^2\)? :)

Answer 2

3u²+2u+9=0?

Answer 3

yes; have you tried factoring it or using the quadratic formula to solve for \(u\)?

Answer 4

yes but i think that \[\Delta <0\] no?

Answer 5

woops; its a complex, i forgot to check sorry

Answer 6

so we can not solve it?

Answer 7

yes we can; its a complex solution though, do you know complex numbers?

Answer 8

no

Answer 9

well it can be said its no solveable since you dont know complex numbers..

Answer 10

thanx