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If x^2+mx+1=0 and (b-c)x^2+(c-a)x+(a-b)=...

If `x^2+mx+1`=0 and (b-c)`x^2+(c-a)x+(a-b)`=0 have both roots common,then

A

m=-2

B

m=-1

C

a,b,c are in AP

D

a,b,c are HP

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A, C
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PATHFINDER-QUADRATIC EQUATION AND EXPRESSION-QUESTION BANK
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