If alpha,beta are roots of the equation...

If `alpha,beta` are roots of the equation `lx^(2)` + mx + n = 0,then the equation whose roots are `alpha^(3) beta` and `alpha beta^(3)` ,is

A

`l^4 x^2 -nl(m^2-2nl)x+n^4 =0`

B

`l^4x^2+n(m^2 -2nl)x+n^4=0`

C

`l^4x^2+nl(m^2-2nl)x-n^4=0`

D

`l^4x^2-n(m^2-2nl) x +n^4 =0`

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The correct Answer is:

A

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