a. The following conclusions are not necessarily correct: A, 5A + 5B + 0b, a / b = - 1, C, AB greater than or equal to 0 D. The absolute value of a is equal to the absolute value of B

a. The following conclusions are not necessarily correct: A, 5A + 5B + 0b, a / b = - 1, C, AB greater than or equal to 0 D. The absolute value of a is equal to the absolute value of B

A. 5A + 5B = 0 correct
B. A / b = - 1 is not necessarily true
C. AB greater than or equal to 0 error
D. The absolute value of a is equal to the absolute value of B