Question

8−i3−2i If the expression above is rewritten in the form a+bi, where a and b are real numbers, what is the value of a? (Note: i=√−1)​

Answer 1

Answer:

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Step-by-step explanation:

Solution

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Correct option is

A

2

Given expression

3−2i

8−i

Rationalising the denominator, we get

3−2i

8−i

=

(3−2i)(3+2i)

(8−i)(3+2i)

=

(9+4)

(24+16i−3i+2)

=

13

26+13i

=2+i

Hence, a=2