Evaluate the following expression: -1(5,-1) + 2(1,1). A. (5,-2) B. (-3,3) C. (7,1) D. (-5,2)

2 answers:

8 0

I believe that the answer should be B

6 0

$-1[5;\ -1]+2[1,\ 1]=[(-1)(5);\ (-1)(-1)]+[(2)(1);\ (2)(1)]=[-5;\ 1]+[2;\ 2]\\\\=[-5+2;\ 1+2]=[-3;\ 3]$
Answer: B

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