factorise 9a^2-4b^2-3a-2b......plz ans me
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9a^2-4b^2-3a-2b
= (3a)²-(2b)²- 3a-2b
= (3a+2b)(3a-2b) - (3a+2b)
= (3a+2b)(3a-2b-1) Ans.
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