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If alpha and beta are the roots of x^2-2...

If `alpha` and `beta` are the roots of `x^2-2x + 3 = 0` then `alpha^2 + beta^2` = ..........

A

-2

B

4

C

8

D

none

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VGS PUBLICATION-BRILLIANT-QUADRATIC EQUATIONS-EXERCISE
  1. For what values of m are the roots of the equation mx^(2) + (m + 3) x ...

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  2. "If" alpha and beta are the roots of the quadratic equation 2x^(2) + 3...

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  3. If alpha and beta are the roots of x^2-2x + 3 = 0 then alpha^2 + beta^...

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  4. If alpha and beta are the roots of x^2-2x+3=0 then alpha^2beta+ beta^2...

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  5. If alpha and beta are the roots of x^2-2x + 3 = 0 the value of alpha^...

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  6. "If" alpha and beta "are the roots of" x^(2) + x + 1 = 0 "then" alpha^...

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  7. "If" alpha and beta "are the roots of" x^(2) - 5x + 6 = 0 "then the va...

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  8. In the quadratic equation x^(2) + x - 2 = 0, a + b + c =

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  9. The degreee of any quadratic equation is..

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  10. Check whether the following are quadratic equation: x(2x+3)=x^(2)+1

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  11. Form a quadratic equation from x^(3) - 4x^(2) - x + 1 = (x - 2)^(3) =

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  12. "If " x + 1/x = 2 " then " x^(2) + 1/x^(2) = ..

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  13. The product of two consecutive positive integers is 306. We need to fi...

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  14. A square carrom board has a perimeter of 320 cm. How much is its area?

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  15. 1 and 3/2 are the roots of…

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  16. The roots of sqrt2x^2 + 7x + 5sqrt2 =0 are ..........

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  17. The roots of 2x^(2) - x + 1/8 = 0 are…

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  18. x(x + 4) = 12 then x =..

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  19. x^(2) - 7x - 60 = 0 then x =..

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  20. Find the roots of the quadratic equations by factorisation: 3(x-4)^(...

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