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If z1 = 2 – i and z2 = -4 + 3i, find the inverse of z1 z2 and z1/z2

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If z1 = 2 – i and z2 = -4 + 3i, find the inverse of z1 z2 and z1/z2

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z1 = 2 – i, z2 = -4 + 3i 

(i) z1 z2 = (2 – i) (-4 + 3i) 

= (-8 + 6i + 4i – 3 i2) 

= (-8 + 10i + 3)

= (-5 + 10i)

(ii) z1/z2

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