x^3+1
? real and imagi. zeros

Question

x^3+1
? real and imagi. zeros

zzr0ck3r · Answer

try x=-1

what d you get?

anonymous · Answer

$$
(a+bi)^3 = -1
$$

anonymous · Answer

To better understand, think of it as: $$
(a+bi)^3 = -1+0i
$$

anonymous · Answer

isn't the answer umm real=3 or 1 and for imagi= x=+-1?

zzr0ck3r · Answer

3^3+1 = 27+1=28
1^1+1 = 1+1 = 2

anonymous · Answer

Do you know complex analysis, or how to convert a number to polar form?

zzr0ck3r · Answer

-1 is a solution but it is not imaginary

1 is not a solution and is not imaginary

(has no imaginary part...)

anonymous · Answer

y'all are thinking hard about this question

anonymous · Answer

I'm not even thinking about it. I already know the answer.

anonymous · Answer

The real challenge is getting you to understand.

anonymous · Answer

nvm i got it already y'alls answer is way off sorry but my teacher just helped me out

anonymous · Answer

I never gave you an answer.

anonymous · Answer

We didn't give you an answer.  We we're proposing ways to solve this.

anonymous · Answer

lol ur formula confuses me

zzr0ck3r · Answer

I think that maybe you should go read some of the material leading up to this question. The fact that you said 3, was a solution of this, and that +-1 is an imaginary number, lets me know that you do not have the base material needed to complete this question.

zzr0ck3r · Answer

no insulting you, I cant do my homework either lol:)

zzr0ck3r · Answer

not*

anonymous · Answer

The only way I can think to solve this without knowing much about complex numbers is to discover that $-1$ is a root, to then divided by $x-(-1)$, to get a quadratic expression, and use the quadratic formula to get the remaining roots.

anonymous · Answer

i just did it already lol. thanks tho' and i messed up i looked at the wrong answer instead the real answer is real=3,1 and for imagi= 2, 1

zzr0ck3r · Answer

non of those numbers are solutions to the equation

and the imaginary numbers you listed are not imaginary

anonymous · Answer

it's actually right tho' and plus my teacher was the one who helped me like few minutes ago and he said that that's the answer

anonymous · Answer

imagi 2,0 *

zzr0ck3r · Answer

ok

zzr0ck3r · Answer

good luck

anonymous · Answer

thanks ^^ i have a finals tom and i hope i can pass it