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If the roots of a quadratic equation are...

If the roots of a quadratic equation are real and equal, then `Delta` must be_______ a) 0 b)Less than 0 c)Greater than 0 d)1

A

zero

B

greater then zero

C

less than zero

D

equal to one

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CHETANA PUBLICATION-Quadratic Equations-EXERCISE
  1. alpha, beta are roots of quadratic equation ax^2+bx+c=0. Then (alpha+b...

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  2. The roots of the quadratic equation y^2-16y+63=0 are a)-9,-7 b)-9,7 c)...

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  3. If the roots of a quadratic equation are real and equal, then Delta mu...

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  4. If one root of quadratic equation kx^2-7x+12=0 is 3, then value of k i...

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  5. If one root of quadratic equation is 1-sqrt3 then the other root is………...

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  6. If the roots of ax^2+bx+c=0 are real and equal then.......a)b^2-4aclt0...

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  7. The value of discriminant of the equation x^2+x+1=0 is…………..a)-4 b)-3 ...

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  8. alpha, beta are roots of quadratic equation such that alpha+beta=-4 a...

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  9. The standard form of quadratic equation x-5/x=3x-7 is……….a)2x^2-8x+7=0...

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  10. What is the nature of roots of quadratic equation: 9x^2-12x+4=0? a)Rea...

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  11. Three times the square of natural number is 363 is written in the math...

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  12. Which of the following is not a quadratic equation? a)-5/3x^2=2x+9 b)(...

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  13. For quadratic equation the product of the roots alpha and beta=…………..a...

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  14. Write the formula: alpha^3+beta^3=…………….a)(alpha+beta)^3-3alphabeta(al...

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  15. If one root of quadratic equation is 5+sqrt 5,then the product of root...

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  16. If x=9 is one root of the quadratic equation x^2-11x+k=0, then find th...

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  17. If one root of the quadratic equation 3y^2-ky+8=0 is 2/3, then find th...

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  18. Determine whether the given values of x are the roots of given quadrat...

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  19. Which of the following is a quadratic equation? a)x-5/x=3x-9 b)x+3=0 c...

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  20. Which of the following is a quadratic equation? a)(x+3)(x-4)=0 b)x=9 c...

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