Question

Factor the expression over the complex numbers. x^2+20 I need the answer

Answer 1

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Heya

x² + 20

= (x)² + (√20)²

Using identity

a² + b² = (a + b)² - 2ab

= (x + √20)² - 2(x)(√20)

= (x + 20)² - 2(x)(√2 × 2 × 5)

= (x + 20)² - 4√5x

Hope this helps you.