## Question

###### Let U and W be subspaces of R*; Uzspan{(1,1,0,-1}, (1,2,2,-2), (1,2,3,0}} and W=span{(2,3,3,1), (2,3,2,-31, (1,3,4,-31}. Find basis for U+W and dim(U+W);

Let U and W be subspaces of R*; Uzspan{(1,1,0,-1}, (1,2,2,-2), (1,2,3,0}} and W=span{(2,3,3,1), (2,3,2,-31, (1,3,4,-31}. Find basis for U+W and dim(U+W);

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