EMNA Q.43

43If a, b, c, d, p and q are non-zero, unequal integers and (a+bi)/(c+di) equals

Option : B
Explanation : a + bi p c + di q qa + qbi = pc + pdi Equating real and imaginary parts. qa = pc and qb = pd. a = -P/q -c and b = (p/q)d * a²+b² (p²/q²)c + (p²/q²)d² p² ---- = ------------------- = -- c²+d² c²+d² q²

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