Question

Evaluate when x = 3, y = -3 and z = -2 plz help

Answer 1

Answer:

Correct option is

A

21

Given x=−2,y=−1,z=3

x

2

+y

2

+z

2

−xy−yz−zx

=(−2)

2

+(−1)

2

+(3)

2

−(−2)(−1)−(−1)(3)−(3)(−2)

=4+1+9−2+3+6

=14−2+9

=12+9

=21

Answer 2

Step-by-step explanation:

3*-3+2*-2

-9+-4

-9-4

-13

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