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D. Exponent 2. The general rule of a square of a binomial is written in the form A. (a + b)2 = a² + ab + b2 C. (a + b)2 = a² + 2ab + b2 B. (a - b)2 = a- 2ab - 62 D. (a - b)2 = a? - ab - 52 3. What must be added to 21​

D Exponent 2 The General Rule Of A Square Of A Binomial Is Written In The Form A A B2 A Ab B2 C A B2 A 2ab B2 B A B2 A 2ab 62 D A B2 A Ab 52 3 What Must Be Adde class=

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Letter D

Step-by-step explanation:

(a + b)2 = a² + ab + b2 C. (a + b)2 = a² + 2ab + b2 B. (a - b)2 = a- 2ab - 62 D. (a - b)2 = a? - ab - 52 3.

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