1.

If 2,5,7,-4are the rootsofax^4+ bx^3 + cx^2 + dx+e=0thentherootsofax^4 - bx^3+ cx^2 -dx +e=0are

Answer»

`2,5,7,-4`
`-2,-5,-7,4`
`2,5,7,4`
`2,-5,7,-4`

ANSWER :B


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