मराठी

A quadratic equation with integral coefficient has integral roots. Justify your answer.

Advertisements
Advertisements

प्रश्न

A quadratic equation with integral coefficient has integral roots. Justify your answer.

बेरीज
Advertisements

उत्तर

No, a quadratic equation with integral coefficients may or may not have integral roots.

Justification:

Consider the following equation,

8x2 – 2x – 1 = 0

The roots of the given equation are `1/2` and `-1/4` which are not integers.

Hence, a quadratic equation with integral coefficient might or might not have integral roots.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Quadatric Euation - Exercise 4.2 [पृष्ठ ३९]

APPEARS IN

एनसीईआरटी एक्झांप्लर Mathematics Exemplar [English] Class 10
पाठ 4 Quadatric Euation
Exercise 4.2 | Q 3 | पृष्ठ ३९

संबंधित प्रश्‍न

If the quadratic equation px2 − 2√5px + 15 = 0 has two equal roots then find the value of p.


Form the quadratic equation if its roots are –3 and 4.


Find the values of k for which the roots are real and equal in each of the following equation:

kx2 + 4x + 1 = 0


Find the values of k for which the roots are real and equal in each of the following equation:

4x2 - 3kx + 1 = 0


Find the values of k for which the roots are real and equal in each of the following equation:

x2 - 2kx + 7k - 12 = 0


Find the values of k for which the roots are real and equal in each of the following equation:

2x2 + kx + 3 = 0


Determine the nature of the roots of the following quadratic equation :

(x - 1)(2x - 7) = 0


Solve the following quadratic equation using formula method only :

`2x + 5 sqrt 3x +6= 0 `


Solve the following quadratic equation using formula method only 

`3"x"^2 - 5"x" + 25/12 = 0 `


Find the value(s) of k for which the pair of equations
kx 2y = 3
3x + 6y = 10
 has a unique solution.


Find the value of k for which the given equation has real roots:
kx2 - 6x - 2 = 0


Determine whether the given quadratic equations have equal roots and if so, find the roots:
`(4)/(3)x^2 - 2x + (3)/(4) = 0`


If the ratio of the roots of the equation
lx2 + nx + n = 0 is p: q, Prove that
`sqrt(p/q) + sqrt(q/p) + sqrt(n/l) = 0.`


Discuss the nature of the roots of the following quadratic equations : -2x2 + x + 1 = 0


If `(1)/(2)` is a root of the equation `x^2 + kx - (5)/(4) = 0`, then the value of k is ______.


If one root of the equation x2+ px + 12 = 0 is 4, while the equation x2 + px + q = 0 has equal roots, the value of q is:


If the equation x2 – (2 + m)x + (–m2 – 4m – 4) = 0 has coincident roots, then:


Find the roots of the quadratic equation by using the quadratic formula in the following:

5x2 + 13x + 8 = 0


Find the roots of the quadratic equation by using the quadratic formula in the following:

`x^2 + 2sqrt(2)x - 6 = 0`


Find the discriminant of the quadratic equation `3x^2 - 2x + 1/3` = 0 and hence find the nature of its roots.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×