SOLUTION: A^4+2=11

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Question 1057476: A^4+2=11
Answer by ikleyn(52944) (Show Source):
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1. If A is a real number and you are seeking for the solutions in real numbers then A^4+2=11 ---> A^4 = 11-2 ---> A^4 = 9 ---> A^2 = ---> A^2 = 3 ---> A = +/- . Two solutions. 2. If A is a complex number and you are seeking for the solutions in complex numbers then A^4+2=11 ---> A^4 = 11-2 ---> A^4 = 9 ---> A^2 = +/- ---> A^2 = +/- 3 ---> A = , or A = , or A = , or A = . Four solutions.