D. Exponent 2. The General Rule Of A Square Of A Binomial Is Written In The Form A. (A + B)2 = A\Xb2 + Ab + B2 C. (A + B)2 = A\Xb2 + 2ab + B2 B. (A - B)2 =

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

 

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.