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gladu [14]
3 years ago
14

Rewrite x^2+9 as a product using complex numbers and the polynomial identity below

Mathematics
1 answer:
Verdich [7]3 years ago
5 0

Answer:

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

Step-by-step explanation:

Express x² + 9 as a difference of squares which factors in general as

a² - b² = (a + b)(a - b), thus

x² + 9

= x² - (3i)²

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

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