SOLUTION: (A squared + A + b)(A squared-A-B)

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Question 186988: (A squared + A + b)(A squared-A-B)
Answer by user_dude2008(1862) About Me  (Show Source):
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(A^2 + A + B)(A^2-A-B)

(A^2 + A + B)(A^2-(A+B))


Let X=A+B

(A^2 + X)(A^2-X)


A^4-X^2


A^4-(A+B)^2


A^4-(A^2+2AB+B^2)


A^4-A^2-2AB-B^2


Ans: (A^2 + A + B)(A^2-A-B) = A^4-A^2-2AB-B^2