Question

1.) x2 + y2 – z2 – 3xyz if x=1, y=-1, z = 2. evalute ​

Answer 1

This is answer


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Answer 2

Answer:

-5

Step-by-step explanation:

X=1 y=2 z=3

1+4-4-(3*1*2)

=1-6

= - 5