factorise 9 a square + 3a - 8 b - 64 b square
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9a^2+3a-8b-64b^2
3a(3a+1)-8b(8b+1)
(3a+1)(8b+1)
3a(3a+1)-8b(8b+1)
(3a+1)(8b+1)
vinit863:
Wrong question
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