Question

if x=1 y=2 and z=0, find the value of x+y+z​

Answer 1

Answer:

Substituting x=1, y=2 and z=5 in the given expression, we get

xy+yz–zx=(1)(2)+(2)(5)–(5)(1)

=(1×2)+(2×5)–(5×1)

=2+10−5

=12–5

=7

∴xy+yz−zx=7

Answer 2

Answer:

hi

Step-by-step explanation:

instead of z value substitute 0