SOLUTION: Can somebody please help me! Find all real and imaginary solutions, b^4 + 13b^2 + 36 = 0 I have been working on this problems for a couple of days and I can't seem to under

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Question 61004This question is from textbook
: Can somebody please help me!
Find all real and imaginary solutions, b^4 + 13b^2 + 36 = 0
I have been working on this problems for a couple of days and I can't seem to understand, or even know what to do. Thank you
 This question is from textbook

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
B^4+13B^2+36=0
(B^2+9)(B^2+4)=0
B^2+9=0
B^2=-9
B=3i
B^2+4=0
B^2=-4
B=2i