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If `alpha, beta ` be the zeros of the polynomial ` 2x^(2)+5x+k` such that ` alpha^(2)+beta^(2)+ alpha beta = (21)/4 ` then k= ?

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NAGEEN PRAKASHAN-POLYNOMIALS-Exercise 2a
  1. From question number 1 to 16, find zeroes of the given quadratic polyn...

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  2. From question number 1 to 16, find zeroes of the given quadratic polyn...

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  3. From question number 1 to 16, find zeroes of the given quadratic polyn...

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  4. From question number 1 to 16, find zeroes of the given quadratic polyn...

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  5. From question number 1 to 16, find zeroes of the given quadratic polyn...

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  6. From question number 1 to 16, find zeroes of the given quadratic polyn...

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  7. Find zeroes of the given quadratic polynomials and verify the relation...

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  8. From question number 1 to 16, find zeroes of the given quadratic polyn...

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  9. Find the quadratic polynomial, the sum of whose zeroes is 17 and the p...

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  10. Find a quadratic polynomial, the sum of whose zeroes is 7 and the prod...

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  11. If the product of zeroes of the polynomial 3x^(2)+5x+k is 6, find the ...

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  12. If the sum of zeroes of the polynomial x^(2)+2kx-12 is 1, find the val...

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  13. If x=(5)/(3) and x=-(1)/(2) are the zeroes of the polynomial ax^(2)-7x...

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  14. Find a quadratic polynomial, the sum of whose zeroes is (5)/(3) and pr...

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  15. Find a quadratic polynomial, the sum of whose zeroes is -(3)/(4) and p...

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  16. If alpha, beta be the zeros of the polynomial 2x^(2)+5x+k such that...

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  17. If alpha andbeta are zeroes of a polynomial f(x0=3x^(2)-4x+1, finda qu...

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  18. If alpha,beta are zeroes of the polynomial x^2-2x-15 , then form a qua...

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  19. If alpha and beta are zeroes of a quadratic polynomial ax^(2)+bx+c. Fi...

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  20. Which of the graphs given below corresponds to linear polynomial or a ...

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