Derive the voltage gain, A_(v)=(v_(o))/(v_(in)), for the op-amp circuit given below
a-A_(v)=((R_(1))/(R_(2)))^(2)+2((R_(2))/(R_(1)))+2
b-A_(v)=((R_(2))/(R_(1)))^(2)+2((R_(2))/(R_(1)))+2
c-A_(v)=((R_(2))/(R_(1)))^(2)+3((R_(2))/(R_(1)))+1
d-A_(v)=((R_(2))/(R_(1)))^(2)+2((R_(2))/(R_(1)))+3