Express the vector x as a linear combination of the uʹs.
-$\mathbf { u } _ { 1 } = \left[ \begin{array} { r } - 2 \ 0 \ 1 \end{array} \right] , \mathbf { u } _ { 2 } = \left[ \begin{array} { l } 3 \ 5 \ 6 \end{array} \right] , \mathbf { u } _ { 3 } = \left[ \begin{array} { r } - 2 \ 6 \ - 4 \end{array} \right] , \mathbf { x } = \left[ \begin{array} { r } 9 \ 39 \ - 2 \end{array} \right]$
A) $\mathbf { x } = 4 \mathbf { u } _ { 1 } + 6 \mathbf { u } _ { 2 } - 4 \mathbf { u } _ { 3 }$
B) $\mathbf { x } = 4 \mathbf { u } _ { 1 } - 3 \mathbf { u } _ { 2 } - 4 \mathbf { u } _ { 3 }$
C) $\mathbf { x } = - 8 \mathbf { u } _ { 1 } + 6 \mathbf { u } _ { 2 } + 8 \mathbf { u } _ { 3 }$
D) $\mathbf { x } = - 4 \mathbf { u } _ { 1 } + 3 \mathbf { u } _ { 2 } + 4 \mathbf { u } _ { 3 }$

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The Answer of Express the vector x as a linear combination of the uʹs.
-$\mathbf { u } _ { 1 } = \left[ \begin{array} { r } - 2 \ 0 \ 1 \end{array} \right] , \mathbf { u } _ { 2 } = \left[ \begin{array} { l } 3 \ 5 \ 6 \end{array} \right] , \mathbf { u } _ { 3 } = \left[ \begin{array} { r } - 2 \ 6 \ - 4 \end{array} \right] , \mathbf { x } = \left[ \begin{array} { r } 9 \ 39 \ - 2 \end{array} \right]$
A) $\mathbf { x } = 4 \mathbf { u } _ { 1 } + 6 \mathbf { u } _ { 2 } - 4 \mathbf { u } _ { 3 }$
B) $\mathbf { x } = 4 \mathbf { u } _ { 1 } - 3 \mathbf { u } _ { 2 } - 4 \mathbf { u } _ { 3 }$
C) $\mathbf { x } = - 8 \mathbf { u } _ { 1 } + 6 \mathbf { u } _ { 2 } + 8 \mathbf { u } _ { 3 }$
D) $\mathbf { x } = - 4 \mathbf { u } _ { 1 } + 3 \mathbf { u } _ { 2 } + 4 \mathbf { u } _ { 3 }$

Express the Vector X as a Linear Combination of the Uʹs