SOLUTION: Find all real and imaginary solutions. b^4+13b^2+36=0

SOLUTION: Find all real and imaginary solutions. b^4+13b^2+36=0

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Question 90606: Find all real and imaginary solutions.
b^4+13b^2+36=0
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
factoring gives (b^2+4)(b^2+9)=0

for b^2+4=0, and , so b=4i and -4i

for b^2+9=0, and , so b=9i and -9i
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