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2851.

If α,βare the roots of the equation ax2+bx+c=0 then the equation whose roots are α+1β and β+1α, is

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If α,βare the roots of the equation ax2+bx+c=0 then the equation whose roots are α+1β and β+1α, is


2852.

If the expression (n−2)x2+8x+(n+4) is negative ∀x∈R, then n lies in

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If the expression (n2)x2+8x+(n+4) is negative xR, then n lies in

2853.

The range of f(x)=1−x2+4x+5,x∈R−{−1,5} is

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The range of f(x)=1x2+4x+5,xR{1,5} is

2854.

If least value of f(x)=x2+bx+c be −14 and maximum value of g(x)=−x2+bx+2 occurs at 32, then c is equal to

Answer» If least value of f(x)=x2+bx+c be 14 and maximum value of g(x)=x2+bx+2 occurs at 32, then c is equal to
2855.

The correct statement about the roots of the equation x2−4√2+8=0

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The correct statement about the roots of the equation x242+8=0


2856.

The zeroes of the quadratic polynomial f(x)=x2+7x+10 are

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The zeroes of the quadratic polynomial f(x)=x2+7x+10 are

2857.

Let p,q be integers and α,β be the roots of the equation x2−2x+3=0 where α≠β. If an=pαn+qβn where n∈{0,1,2,.....}, then the value of a9 is

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Let p,q be integers and α,β be the roots of the equation x22x+3=0 where αβ.
If an=pαn+qβn where n{0,1,2,.....}, then the value of a9 is

2858.

Let α,β be the values of m for which the equation (1+m)x2−2(1+3m)x+(1+8m) has equal roots. Find the equation whose roots are α+2 and β+2.

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Let α,β be the values of m for which the equation (1+m)x22(1+3m)x+(1+8m) has equal roots. Find the equation whose roots are α+2 and β+2.


2859.

The number of real roots of the equation, e4x+e3x−4e2x+ex+1=0 is :

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The number of real roots of the equation, e4x+e3x4e2x+ex+1=0 is :

2860.

The value(s) of a for which the roots of 2x2+(a2−1)x+a2+3a+4=0 are reciprocal to each other is/are

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The value(s) of a for which the roots of 2x2+(a21)x+a2+3a+4=0 are reciprocal to each other is/are

2861.

Find the equation whose roots are the cubes of the roots of x3+3x2+2=0

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Find the equation whose roots are the cubes of the roots of x3+3x2+2=0

2862.

The sum of values of x satisfying the equation √x1−x+√1−xx=136 is

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The sum of values of x satisfying the equation x1x+1xx=136 is

2863.

If equations x2−3x+4=0 and 4x2−2[3a+b]x+b=0 (a,b∈R) have a common root, then the complete set of values of a is (Here, [K] denotes the greatest integer less than or equal to K.)

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If equations x23x+4=0 and 4x22[3a+b]x+b=0 (a,bR) have a common root, then the complete set of values of a is
(Here, [K] denotes the greatest integer less than or equal to K.)

2864.

Let α, β be the roots of ax2+bx+c=0. The roots of a(x−2)2−b(x−2)(x−3)+c(x−3)2=0, where a≠0 are

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Let α, β be the roots of ax2+bx+c=0. The roots of a(x2)2b(x2)(x3)+c(x3)2=0, where a0 are

2865.

If α,β are the roots of 2x2−2x+3=0 and α−1,β−1 are the roots of Ax2+Bx+C=0, then the value of (BA)2−4(CA) is

Answer» If α,β are the roots of 2x22x+3=0 and α1,β1 are the roots of Ax2+Bx+C=0, then the value of (BA)24(CA) is
2866.

If m is choosen in the quadratic equation (m2+1)x2−3x+(m2+1)2=0 such that the sum of its roots is greatest, then the absolute difference of the cubes of its roots is :

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If m is choosen in the quadratic equation (m2+1)x23x+(m2+1)2=0 such that the sum of its roots is greatest, then the absolute difference of the cubes of its roots is :

2867.

Consider the quadratic equation (c−5)x2−2cx+(c−4)=0. Let S be the set of all integral values of c for which one root of the equation lies in the interval (0,2) and another root lies in the interval (2,3). The number of elements in S is

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Consider the quadratic equation (c5)x22cx+(c4)=0. Let S be the set of all integral values of c for which one root of the equation lies in the interval (0,2) and another root lies in the interval (2,3). The number of elements in S is

2868.

If the three equations x2+ax+12=0, x2+bx+15=0, x2+(a+b)x+36=0 have a common possible root. Then, the sum of roots is

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If the three equations x2+ax+12=0, x2+bx+15=0, x2+(a+b)x+36=0 have a common possible root. Then, the sum of roots is

2869.

√5x2+x+√5=0

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5x2+x+5=0


    2870.

    Let f(x)=(λ2+λ−2)x2+(λ+2)x be a quadratic polynomial. The sum of all integral values of λ for which f(x)<1 ∀ x∈R, is

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    Let f(x)=(λ2+λ2)x2+(λ+2)x be a quadratic polynomial. The sum of all integral values of λ for which f(x)<1 xR, is

    2871.

    If the difference of the roots of the equation (k−2)x2−(k−4)x−2=0,k≠2 is 3, then the sum of all the values of k is

    Answer»

    If the difference of the roots of the equation (k2)x2(k4)x2=0,k2 is 3, then the sum of all the values of k is

    2872.

    The zeroes of the polynomial f(x)=6x2−x−2 is/are

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    The zeroes of the polynomial f(x)=6x2x2 is/are

    2873.

    Let α,β be the roots of x2−x−1=0 (α&gt;β) and m,n∈Z,k∈W such that ak=mαk+nβk. If a4=35, then the value of 3m+2n is equal to

    Answer»

    Let α,β be the roots of x2x1=0 (α>β) and m,nZ,kW such that ak=mαk+nβk. If a4=35, then the value of 3m+2n is equal to