factorise (2b-3)square-(2b-3)-12​

Dear Student ,
 
Please find below the solution to the asked query :

2b-32-2b-3-12Let 2b-3=xSo,x2-x-12Splitting the middle termx2-4x+3x-12=x x-4 +3 x-4=x+3 x-4Substituting x=2b-32b-3+3 2b-3-4=2b 2b-7   ANS...
 
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