Factorise by grouping method a²+4b²-3a+6b-4ab
anglevanshi:
is this question is from class 8 maths textbook
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Re-arranging :
=>a^2 +(2b)^2 - 2a(2b) - 3(a-2b)
=(a-2b)^2 - 3(a-2b)
=(a-2b){ a-2b - 3 }
=( a - 2b )( a - 2b - 3 )
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