(A+1)^2+3(A-1)^2-5(A+1)(A-1)
(A+1)^2+3(A-1)^2-5(A+1)(A-1)=-A^2-4A-1
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(A+1)^2+3(A-1)^2-5(A+1)(A-1)=-A^2-4A-1