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Question

When $$(3-2i)$$ is subtracted from $$(4 + 7i)$$, then the result is


A
1+5i
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B
1+9i
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C
7+5i
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D
7+9i
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Solution

The correct option is B $$1 + 9i$$
We need to subtract $$(3-2i)$$ from $$(4+7i)$$
$$\therefore 4 + 7i - (3 - 2i)$$
$$=4 + 7i - 3 + 2i $$
$$= 1 + 9i$$

Mathematics

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