Question

factorise (3a - b+ 2z) ²​

Answer 1

Answer:

(3a - b+ 2z)²

(3a - b+ 2z)(3a - b+ 2z)

9a² - 3ab + 6az - 3ab + b² - 2bz + 6az - 2bz + 4z²

9a² + b² + 4z² - 6ab + 12az -4bz

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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