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Factorize: 9(2a – b)^2 – 4(2a – b)

1 Answer

3 votes

Answer:

(2 a - b) (18 a - 9 b - 4)

Explanation:

Factor the following:

9 (2 a - b)^2 - 4 (2 a - b)

Factor 2 a - b out of 9 (2 a - b)^2 - 4 (2 a - b):

(2 a - b) (9 (2 a - b) - 4)

9 (2 a - b) = 18 a - 9 b:

Answer: (2 a - b) (18 a - 9 b - 4)

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