Question

Add the following x-y,xy,y-z,zx,z-x+zx​

Answer 1

x_y+xy+y_z+zx+z_x+zy

xy+2zx

Answer 2

x-y+xy+y-z+zx+z-x+zx

x will be subtracted

y will be subtracted

z will also be subtracted

so x-y, y-z and z-x terms will be cancelled

then xy + yz + zx

will remain

thank you

i hope it's helpful