Question

If (xy)(0 - 1) = z, (yz)(-1) = x and (x2)(-1) = y, and
xyz is not -1, 0 or 1, then which of the following
is equal to ab + bc + ca?​

Answer 1

Answer:

If (xy)(0 - 1) = z, (yz)(-1) = x and (x2)(-1) = y, and

xyz is not -1, 0 or 1, then which of the following

is equal to ab + bc + ca?