Suppose A and B are square matrices of the same size. Which of the following are NOT necessarily true? (A + B)² = A² + 2AB + B² (A - B)² = A² − 2AB + B² □ A²B² = A(AB)B D(A + B)³ = A³+ B³ □ (A + B)(A − B) = A² – B² (AB)² = A²B² □ (A + B)² = A²+ AB + BA + B²

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