Can someone help me factorise this??? a^2+9b^2-6ab-2a+6b

[From: ] [author: ] [Date: 11-10-09] [Hit: ]

a^2+9b^2-6ab-2a+6b
=a^2-6ab+9b^2-2a+6b
=(a-3b)(a-3b)-2(a-3b)
=(a-3b)(a-3b-2)

not factorable

.. a^2 + 9b^2 - 6ab - 2a + 6b
= (a - 3b - 2) ( a - 3b )

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