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Mathematics 9 Online
OpenStudy (supernova_sonntag):

Write in standard form and find zeros? f(x)=(x-3i)(x+3i) I know the answers are x^2+9 and the zeros are +or- 3i But how?

OpenStudy (supernova_sonntag):

Actually, I know how to find the zeros but the other part I don't

OpenStudy (brydenwright):

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