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For what values of b, the roots of x^(2)...

For what values of b, the roots of `x^(2) +bx + 9 =0`, are equal ?

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`+-6`
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PEARSON IIT JEE FOUNDATION-QUADRATIC EXPRESSIONS AND EQUATIONS-Very Short
  1. For the expression ax^(2)+ 7x + 2 to be quadratic, the possible value ...

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  2. The equation, ax^(2) + bx + c = 0, can be expressed as aalpha^(2) + ba...

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  3. If -3 and 4 are the roots of the equation (x+k) (x-4) =0 , then the va...

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  4. The polynomial, sqrt(3)x^(2) + 2x +1 is a "" expression.

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  5. For the equation 2x^(2) - 3x + 5 = 0 sum of the roots is "".

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  6. The quadratic equation having roots -a,-b is "".

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  7. A quadratic equation whose roots are 2 moe than the roots of the quadr...

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  8. For the expression 7x^(2) + bx +4 to be quadratic , the possible val...

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  9. If (x-2)(x+3) =0 , then the values of x are "".

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  10. The roots of the equation x^(2) + ax + b = 0 are "".

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  11. x = 2 is a roots of the equation x^(2) - 5x + 6 = 0. Is the given sta...

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  12. If the equation 3x^(2) - 2x-3 = 0has roots alpha, and beta then alpha....

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  13. If the discriminant of the equation ax^(2) + bx + c = 0 is greater tha...

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  14. If the roots of a quadratic equation ax^(2) + bx + c are complex, then...

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  15. The roots of a quadratic equation ax^(2) + bx + c=0 are 1 and c/a, th...

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  16. If the roots of quadratic equation are equal , then the discriminant o...

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  17. For what values of b, the roots of x^(2) +bx + 9 =0, are equal ?

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  18. If the sum of the roots of a quadratic equation, is positive and produ...

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  19. If x = 1 is a solution of the quadratic equation ax^(2) - bx + c = 0, ...

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