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Q.

If (3+i)100=299(p+iq), then p and q are roots of the equation

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a

x2(31)x3=0

b

x2+(3+1)x+3=0

c

x2+(31)x3=0

d

x2(3+1)x+3=0

answer is A.

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Detailed Solution

(3+i)100=299(p+iq)2100ei100π6=299(p+iq) 2ei2π3=p+iq 2cosππ3+isinππ3=p+iq     (1+i3)=p+iq p=1 and q=3Equation whose roots are -1 and 3 is (x+1)(x3)=0 x2(31)x3=0

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