Question

find the following products
$( {z}^{2} + 2)( {z}^{2 } - 3)$
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Answer 1

(z² + 2)(z² - 3)

⇒ z²(z² - 3) + 2(z² - 3)

⇒ (z⁴ - 3z²) + (2z² - 6)

⇒ z⁴ - 3z² + 2z² - 6

⇒ z⁴ - 1z² - 6

⇒ z⁴ - z² - 6

Answer 2

Answer:

answer in attachment

hope this helps you mate