Question

9. Evaluate the following at x =-1, y= -2, z=0 (i ) (x+y+z) ² -x²-y²-z²


solve answers explain​ please give correct answer ​

Answer 1

Answer:

Good Morning

Here's your answer:

x=-1, y=-2 and z=0

(I) (x+y+z)²-x²-y²-z²

(-1+(-2)+0)-(-1)²-(-2)²-(0)²

(-1-2+0)-(1-4-0)

-3-1+4+0

-4+4

=0

therefore answer is 0

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