A = (- 1,1) B = (the square of x|x-2ax + B = 0) if a contains B, then the value of a and B? Let's ask the value of AB when B is an empty set A = (- 1,1) B = (the square of X | X - 2aX + B = 0) if a contains B, then the value of a and B? Let's ask the value of AB when B is an empty set

A = (- 1,1) B = (the square of x|x-2ax + B = 0) if a contains B, then the value of a and B? Let's ask the value of AB when B is an empty set A = (- 1,1) B = (the square of X | X - 2aX + B = 0) if a contains B, then the value of a and B? Let's ask the value of AB when B is an empty set

When B is an empty set, x ^ 2-2ax + B = 0 has no solution, 4A ^ 2-4b