Question

Simplify: (x + y - z) * x + (z + x - y) * y - (z + y - x) * z​

Answer 1

Answer:

x

y

=z,y

z

=x and z

x

=y

Put x=y

z

in (x

y

=z)

⇒y

zy

=z,

Now put y=z

x

z

xyz

=z ⇒

xyz=1

Hence only one value of (x,y,z) is possible.