1 -3 -1 HA=[2] [2 If A = and AB = - 3 4 b₁ = b₂: = - 11 9 -2 86 determine the first and second columns of B. Let b₁ be column 1 of B and b₂ be column 2 of B.

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A: NOTE: Refresh your page if you can't see any equations. . given vectors are

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Q: perform the indicated operation  ( 8r2+5r-14)+(-7r2-17r+7)=

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