algebra

QUESTION 6 are The vectors u =(5,3,-1) and y =(-4,2,-4) True orthogonal False Question Completion Status: The Eigenvectors of the following matrix A= A-60-4 1 0 0-1 is Xi 1 -3 X2 QUESTION 8 The standard basis for the vector space R3 is {(1, 0, 0), (0, 1, 0), (0, 0, 1)} True False QUESTION 9 Let S= {(2,1),(-1,2)), then Sis spans in R2. True False QUESTION 10 If A and B are matrices, then (A+B )2= A2 + B2 O True O False