1.

Select the term which is not an identity.

A. (a + b)2 = a2 + b2b) (a + b)2 = a2 + b2 + 2abc) (a –
B. 2 = a2 + b2b) (a + b)2 = a2 + b2 + 2ab
C. (a – b)2 = a2 + b2 – 2ab
D. (a + 1)(a + 2) = a2 + 3a + 2
Answer» B. 2 = a2 + b2b) (a + b)2 = a2 + b2 + 2ab


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