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The complex number $\large\frac{1+2i}{1-i}$ lies in which quadrant?

(A) I Quadrant

(B) II Quadrant

(C) III Quadrant

(D) IV Quadrant

Can you answer this question?

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$\large\frac{1+2i}{1-i}=\frac{(1+2i)(1+i)}{2}$ (Rationalising the denominator)
which is in 2nd quadrant.
answered Jul 28, 2013 by rvidyagovindarajan_1

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