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If alphaa n dbeta,alphaa n dgamma,alphaa...

If `alphaa n dbeta,alphaa n dgamma,alphaa n ddelta` are the roots of the equations `a x^2+2b x+c=0,2b x^2+c x+a=0a d nc x^2+a x+2b=0,` respectively, where a, b, and c are positive real numbers, then `alpha+alpha^2=` a.`a b c` b. `a+2b+c` c. `-1` d. `0`

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  2. Find the values of a if x^2-2(a-1)x+(2a+1)=0 has positive roots.

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  18. Let f(x)=a^2+b x+c where a ,b , c in R and a!=0. It is known that f(5...

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  19. If x=1 and x=2 are solutions of equations x^3+a x^2+b x+c=0 and a+b=1,...

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