a. a+b=3i+4j,a+b=⟨3,4⟩\bold{a} + \bold{b} = 3\bold{i} + 4\bold{j}, \bold{a}+ \bold{b} = \lang 3, 4\ranga+b=3i+4j,a+b=⟨3,4⟩ b. a−b=i−2j,a−b=⟨1,−2⟩\bold{a} − \bold{b} = \bold{i} − 2\bold{j}, \bold{a} − \bold{b} = \lang 1, −2\ranga−b=i−2j,a−b=⟨1,−2⟩ c. Las respuestas variarán d. 2a=4i+2j,2a=⟨4,2⟩,−b=−i−3j,−b=⟨−1,−3⟩,2a−b=3i−j,2a−b=⟨3,−1⟩2\bold{a} = 4\bold{i} + 2\bold{j}, 2\bold{a} = \lang 4, 2\rang, −\bold{b}\\ = −\bold{i} − 3\bold{j}, −\bold{b} = \lang − 1, −3\rang, 2\bold{a} − \bold{b} = 3\bold{i} − \bold{j}, 2\bold{a} − \bold{b} = \lang 3, −1\rang2a=4i+2j,2a=⟨4,2⟩,−b=−i−3j,−b=⟨−1,−3⟩,2a−b=3i−j,2a−b=⟨3,−1⟩