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If the roots of x^2-bx +c=0 are two cons...

If the roots of `x^2-bx +c=0` are two consecutive integers then `b^2-4c=`

A

3

B

`-2`

C

1

D

2

Text Solution

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The correct Answer is:
C
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Consider the following statements : S_1 : If the roots of x^2-bx + c = 0 are two consecutive integers, then value of b^2-4c is equal to 1. S_2 : If alpha,beta are roots of x^2-x+3=0 then value of alpha^4+beta^4 is equal 7. S_3: If alpha,beta,gamma are the roots of x^3-7x^2+16x-12=0 then value of alpha^2+beta^2+gamma^2 is equal 17. State, in order, whether s_1,s_2,s_3 are true or fales

Consider the following statements 1 : If the roots of x^2-bx + c = 0 are two consecutive integers, then value of b^2-4c is equal to 1. S_2 : If alpha,beta are roots of x^2-x + 3 = 0 then value of alpha^4+beta^4 is equal 7. S_3 : If alpha,beta,gamma are the roots of x^3-7x^2 + 16 x-12=0 then value of alpha^2+beta^2+gamma^2 is equal to 17. State, in order, whether S_1, S_2, S_3 are true or false

If the roots of the equation x^2-bx+c=0 are two consecutive integers then 3(b^2-4c)=

If the roots of x^(2) - bx + c = 0 are two consecutive integral multiples of 5, then sqrt(b^(2) - 4c) is equal to ______

If the roots of the equation x^(2)-bx+c=0 are two consecutive integers,then find the value of b^(2)-4c.

If the roots of ht cubic,x^(3)+ax^(2)+bx+c=0 are three consecutive positive integers,then the value of (a^(2)/b+1) is equal to

VK JAISWAL-QUADRATIC EQUATIONS -EXERCISE (SUBJECTIVE TYPE PROBLEMS)
  1. If the roots of x^2-bx +c=0 are two consecutive integers then b^2-4c=

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  2. Let f(x) = ax^2 + bx + c where a,b,c are integers. If sin\ pi/7 * sin\...

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  3. Let a, b, c, d be distinct integers such that the equation (x - a) (x ...

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  4. Consider the equation (x^2 + x + 1)^2-(m-3)(x^2 + x + 1) +m=(1), wher...

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  5. The number of positive integral values of m, m le 16 for which the equ...

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  6. If the equatio (m^(2) -12 )x^(4) -8x ^(2)-4=0 has no real roots, then ...

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  7. The least positive integral value of 'x' satisfying (e^x-2)(sin(x+pi/...

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  8. The integral values of x for which x^2 +17x+71 is perfect square of a ...

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  9. Let p(x) =x^6-x^5-x^3-x^2-x and alpha, beta, gamma, delta are the root...

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  10. The number of real values of 'a' for which the largest value of the fu...

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  11. The number of all values of n, (whre n is a whole number ) for which t...

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  12. The number of negative intergral values of m for which the expression ...

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  13. If the expression ax ^(4)+bx^(3)-x ^(2)+2x+3 has the remainder 4x +3 w...

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  14. The smallest value of k for which both the roots of the equation x^2-8...

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  15. If x ^(2) -3x+2 is a factor of x ^(4) -px ^(2) +q=0, then p+q=

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  16. The expression x^2 + 2xy + ky^2 + 2x + k = 0 can be resolved into two ...

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  17. The curvey y = (a +1) x ^(2) + 2 meets the curve y = ax +3, a ne -1 in...

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  18. Find the number of integral vaues of 'a' for which the range of functi...

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  19. When x ^(100) is divided by x ^(2) -3x +2, the remainder is (2 ^(k +1)...

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  20. Let p (x) be a polynomial equation of least possible degree, with rati...

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  21. The range of values k for which the equation 2 cos ^(4)x-sin ^(4)x +k=...

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