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Let x1,x2,x3,x4,be the roots (real or co...

Let `x_1,x_2,x_3,x_4`,be the roots (real or complex) of the equation `x^4+ax^3+bx^2+cx+d=0`.
If `x_1+x_2=x_3+x_4` and a,b,c,d`in`R, then
If a=2, then the value of b-c is

A

-1

B

1

C

-2

D

2

Text Solution

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The correct Answer is:
B
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