Please answer the following question correctly
Q.1. What must be subtracted from a 2 + b + 1 to obtain a 2 - b ?

Dear student,
Lat A be subtracted from a2+b+1 to obtain a2-bAcc. to question, a2+b+1-A=a2-ba2+b+1-a2+b=A2b+1=AThus 2b+1 be subtracted from  a2+b+1 to obtain a2-b
Regards

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