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Which of the following expression is equal to X^2+9

Which of the following expression is equal to X^2+9
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Which of the following expression is equal to X^2+9

User Dieter Rehbein
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1 Answer

2 votes

Answer:

(x + 3i) * (x - 3i) = x^2 + 3xi - 3xi - 9(i^2) = x^2 + 9

Explanation:

User Erickreutz
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