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  1. mathematics
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  3. find a + b, 9a + 7b, lal, and la - bl. (simplify y

Find a + b, 9a + 7b, lal, and la - bl. (Simplify your vectors...

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Calculus

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Find a + b, 9a + 7b, lal, and la - bl. (Simplify your vectors completely.)a = 9i - 8j + 7k, b = 7i - 9ka + b119a + 7b =|a| =la - bl =

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