Question

x² + y2 - z2 -- 3xyz if x=1, y = -1, z = 2
70 ​

Answer 1

Answer:

answer is 8 so let's solve it .

Step-by-step explanation:

(1)^2+(-1)^2-(2)2-3(1)(-1)(2).

1+1-4+6

2-4+6

-2+6

8 ans.

please like it and mark as brainlist .