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Given z1 = 4 – 7i and z2 = 5 + 6i find the additive and multiplicative inverse of z1 + z2 and Z1 – Z2

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Given z1 = 4 – 7i and z2 = 5 + 6i find the additive and multiplicative inverse of z1 + z2 and Z1 – Z2

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Z1 = 4 – 7i, z2 = 5 + 6i 

Z1 + z2 = 4 – 7i + 5 + 6i = 9 + i 

Additive inverse of 

z1 + z2 = – (z1 + z2) 

= – (9 – i) = i – 9

Multiplicative inverse of

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