Question

answer me i will mark brailiest ​

Answer 1

Answer:

answer is "2"

Step-by-step explanation:

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Answer 2

Answer:

x=1

y=-1

z=2

x2+y2-z2

substituting the value of x y and z

(1)^2+(-1)^2-(2)^2

1+1-4

2-4

-2 is the answer