1 A =-3 -2 -2 ,and b= 9 1. Let 1 9. -5 ,x= 4 -8 -1 7 It can be shown that Ax b. Use this fact to exhibit b as a specific linear %3D combination of the columns of A.

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A: To find the missing entry, we perform the indicated operations. Hence we obtained the missing entry.

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