Let a 7,2,4) and b=(1, -5,-2). Find a vector that == - has length 3a+26 and a direction opposite to that of a+b. Hint: A vector whose length is L and has opposite direction to vector is: -L vis: V 0 (7,-14, 14) O (12,12,-21) (24,3,-12) 0(-9, 18, -6) (18,9, -6)

Q: a= b=

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Q: photo is attached

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