SOLUTION: Is 4(x² + 25) completely factored? If not, justify your answer?

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Question 875198: Is 4(x² + 25) completely factored? If not, justify your answer?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Over the reals, yes. It can be factored over complex numbers as 4(x+5i)(x-5i).