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Express the column matrix b as a linear combination of the columns of A. (Use A4, 45, and A5 respectively for the columns of A.)

Express the column matrix b as a linear combination of the columns of A. (Use A4, 45, and A5 respectively for the columns of A.) A= -1 1 =3 . b= -5 31 2 7 _E b= OA3+7A3 X Need Help

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