Question

solve the sum of identities using direct method ​

Answer 1

Answer:

use the identity (a-b)(a+b) that is equal to a^2-b^2

{z-2/3}{z-2/3}

(z^2-2/3^2)

z^2-4/9

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Answer 2

Answer:

this is help u friend

Step-by-step explanation:

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