Question

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

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

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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