solve this question please
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just open the bracket
4x2+4bx-(a2-b2)
(4x2+4bx+b2)-a2
(2x+b)2A-a2
then apply formula of a2-b2
4x2+4bx-(a2-b2)
(4x2+4bx+b2)-a2
(2x+b)2A-a2
then apply formula of a2-b2
shaun8:
sorry i didn't get
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