Question

Again, more clearly:
f(x)=(x+2)(x-(3+2i))(x-(3-2i))
g(x)=(x+2)(x-(3+2))(x-(3-2))
What are the points of intersection?
i^2=-1

Answer 1

x=3?

Answer 2

hmm or maybe x=-2

Answer 3

i got x=3 but it makes no sense with the graph..

Answer 4

yea i know right.

Answer 5

graph shows x=-2 right?.

Answer 6

i dont know because the curve sketching program i use doesnt understand complex numbers

Answer 7

Try this,
http://www.wolframalpha.com/input/?i=solve+%28x%2B2%29%28x-%283%2B2i%29%29%28x-%283-2i%29%29%3D%28x%2B2%29%28x-%283%2B2%29%29%28x-%283-2%29%29

Answer 8

can you type in two equations at the same time in that one? it didnt work for me before

Answer 9

ah right just saw it sorry

Answer 10

yea u can. Next time if u have problem with math, ask Mr.Wolframalpha. HAHAHA

Answer 11

wait wait sorry i said it wrong, g(x) is supposed to be -(x+2).....

Answer 12

ah beautiful :D http://www.wolframalpha.com/input/?i=solve+%28x%2B2%29%28x-%283%2B2i%29%29%28x-%283-2i%29%29%3D-%28x%2B2%29%28x-%283%2B2%29%29%28x-%283-2%29%29

Answer 13

that would me 3 and -2?

Answer 14

but is there a calculus proof for -2?

Answer 15

Nicely done. :D i try to solve it again

Answer 16

sorry man, not really sure how to solve.

Answer 17

its okay ill keep working on it this at least gave me a clue =)

Answer 18

how did you get there though ?

Answer 19

i just saw my mistake. still can;t solve yet.