Question

see the pic to answer the question

Answer 1

Answer:

 z²- 13z + 30 = 0

⇒ z²- 10z - 3z + 30 = 0

⇒ z(z - 10)- 3(z - 10) = 0

⇒ (z - 10) × (z - 3) = 0

⇒ z = 10  OR  z = 3

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Step-by-step explanation: