Question

find the following products (i) (z^2+2)(z^2-3)​

Answer 1

Answer:

$({z}^{2}+2)( {z}^{2} - 3) \\ = {z}^{4} - 3 {z}^{2} + 2 {z}^{2} - 6 \\ = {z}^{4} - {z}^{2} - 6 \: \: \: \: \: \: \: \: \: \: \: \: \:$

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