Q.

If one root of the quadratic equation ax2 + bx+ c = 0 is equal to the n  power of the other root,then the value of (acn)1n+1+ (an c)1n+1 =

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a

b

b

-b

c

b1n+1

d

-b1n+1

answer is B.

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Detailed Solution

Let α, αn be the two roots.Then α + αn = -b/a, ααn = c/a Eliminating α, We get ca1n+1  + cann+1 = - ba ⇒a.a-1n+1 . c1n+1    + a.a-nn+ 1 .cnn+1= -b or (an c)1n+1 + (acn )1n+1 = -b
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