Question

if a=2 , b=(-1) , c=1

find:

a²+b²+c²-ab-bc-ca​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

7

Step-by-step explanation:

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

4+1+1+2+1-2

7

Hope it helps

Thank you

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