48. Factorise (i)4a2
– 9b2
– 2a – 3b (ii) a2
– b
2
-2(ab –ac + bc)
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4a2 - 9b2 - 2a - 3b
= (2a)2 - (3b)2 - 1(2a + 3b )
= (2a+3b ) ( 2a - 3b ) -1 (2a+ 3b)
(2a+3b) ( 2a - 3b - 1)ans.
= (2a)2 - (3b)2 - 1(2a + 3b )
= (2a+3b ) ( 2a - 3b ) -1 (2a+ 3b)
(2a+3b) ( 2a - 3b - 1)ans.
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