factorize : 4a2-b2+2b-1
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Answer: (2a-b+1)(2a+b-1)
Step-by-step explanation:
4a2 - b2 +2b - 1
= 4a2 - (b2 - 2b +1)
= 4a2 - (b-1)^2
= (2a)^2 - (b-1)^2
= (2a-b+1)(2a+b-1)
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