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Question

If (x+iy)(23i)=4+i, then values of x and y are

A
x=511,y=711
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B
x=513,y=713
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C
x=513,y=1413
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D
x=511,y=713
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Solution

The correct option is C x=513,y=1413
(x+iy)(23i)=4+i
(2x+3y)+i(2y3x)=4+i
Equating the real and imaginary parts separately, we get
2x+3y=4 and 3x+2y=1

On solving both the above equations, we get
x=513 and y=1413

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