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Find a + b, 7a + 2b, la|, and la - bl. a = 7i - 6j + 2k, b = 5i - 7k a

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Find a + b, 7a + 2b, la|, and la - bl. a = 7i - 6j + 2k, b = 5i - 7k a + b = 7a + 2b = la = la - bl = Need Help? Read It 9. [-/7.69 Points] DETAILS SCALCET8 12.2.025. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find a unit vector that has the same direction as the given vector. 4i - j + 8k

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