Question

x+y=o, -x+z=0,-2x-3y=0 calculate xyz​

Answer 1

x+y=0_______(1)

-x+z=0_______(2)

-2x-3y=0____(3)

take eqn (1) and (3)

multiply (1) by 3

3x+3y=0_______(4)

now add eqn (3)and (4)

-2x-3y=0

+ 3x+3y=0

_____________

x=0

put x=0 in eqn (1)

0+y=0

y=0

put x=0 in eqn (2)

-0+z=0

z=0

xyz=0