Question

Im so confused..
(true or false)
The complex (imaginary part) of one of the solutions of ix^4+(1+i)x^2+7 = 0 is 3i.

Is that false?

Answer 1

does x=3i produce a zero?

Answer 2

do i just plug into quadratic formula?

Answer 3

just plug it into the equation itself

ix^4+(1+i)x^2+7

i(3i)^4+(1+i)(3i)^2+7

3^4 i^5 + 3^2 i^3 + 9i^2 + 7

Answer 4

After plugging in what would I do next

Answer 5

see if it maths into a zero solution ....

Answer 6

in other words ... do the math

Answer 7

ok ill try it out thanks

Answer 8

good luck