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southrebels2
 3 years ago
Which of the following is a polynomial with roots 3, 3i, and 3i ?
A. x^3 + 3x^2 + 9x + 27
B. x^3  3x^2 + 9x  27
C. x^3 + 9x^2 + 9x + 81
D. x^3  9x^2 + 9x  81
southrebels2
 3 years ago
Which of the following is a polynomial with roots 3, 3i, and 3i ? A. x^3 + 3x^2 + 9x + 27 B. x^3  3x^2 + 9x  27 C. x^3 + 9x^2 + 9x + 81 D. x^3  9x^2 + 9x  81

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across
 3 years ago
Best ResponseYou've already chosen the best response.0Expand the following:\[(x+3)(x+3i)(x3i).\]

southrebels2
 3 years ago
Best ResponseYou've already chosen the best response.0Well how do you expand with the i?

across
 3 years ago
Best ResponseYou've already chosen the best response.0Remember that \(i=\sqrt{1}\). So, \(i\cdot i=1\), etc.

southrebels2
 3 years ago
Best ResponseYou've already chosen the best response.0Im totally confused..can you just tell me the answer please.
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