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All the value of `k` for which the quadratic polynomial `f(x)=2x^2+k x+2=0` has equal roots is ________. (a) 4 (B) +4,-4 (c) +3,-3 (d) 2

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CENGAGE ENGLISH-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  3. All the value of k for which the quadratic polynomial f(x)=2x^2+k x+2=...

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  4. If a=cos(2pi//7)+isin(2pi//7), then find the quadratic equation whose ...

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  7. If x=-5+2sqrt(-4) , find the value of x^4+9x^3+35 x^2-x+4.

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  8. Let a , b ,a n dc be rel numbers which satisfy the equation a+1/(b c)=...

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  9. The value of i^(1+3+5+.....+(2n+1)) is.

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  10. a ,b , c are integers, not all simultaneously equal, and omega is cube...

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  12. If z + 1/z = 2costheta, prove that |(z^(2n)-1)//(z^(2n)+1)|=|tannthet...

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  13. If alpha,beta are the roots of the quadratic equation a x^2+b x+c=0 , ...

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  18. if diagonals of a parallelogram bisect each other,prove that its a rho...

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  19. If a ,b ,c and u ,v ,w are the complex numbers representing the vertic...

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