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16-02-2021
Mathematics

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what is the error in this polynomial x²+9=(x+3)(x+3)?

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xenia168 xenia168

16-02-2021

Answer:

(x + 3i)(x - 3i)

Step-by-step explanation:

Wrong statement: x² + 9 = (x + 3)(x + 3)

Correct statement: x² + 9 = x² - (3i)² = (x + 3i)(x - 3i)

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