Factorise : 4a2 - 9b2 - 2a - 3b
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Answered by
142
4a²-9b² -2a -3b
=[(2a)²-(3b)²] - (2a+3b)
=[(2a+3b)(2a-3b)] -(2a+3b)
= (2a+3b)[2a-3b-1]
=[(2a)²-(3b)²] - (2a+3b)
=[(2a+3b)(2a-3b)] -(2a+3b)
= (2a+3b)[2a-3b-1]
Answered by
38
=[(2a)²-(3b)²] - (2a+3b)
=[(2a+3b)(2a-3b)] -(2a+3b)
= (2a+3b)[2a-3b-1]
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