Advertisements
Advertisements
प्रश्न
A quadratic equation with integral coefficient has integral roots. Justify your answer.
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.
APPEARS IN
संबंधित प्रश्न
Is it possible to design a rectangular park of perimeter 80 and area 400 m2? If so find its length and breadth.
If (k – 3), (2k + l) and (4k + 3) are three consecutive terms of an A.P., find the value of k.
Find the values of k for which the roots are real and equal in each of the following equation:
(3k+1)x2 + 2(k + 1)x + k = 0
Determine the nature of the roots of the following quadratic equation :
2x2 + x-1=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.`
Find the value(s) of m for which each of the following quadratic equation has real and equal roots: (3m + 1)x2 + 2(m + 1)x + m = 0
If a = 1, b = 4, c = – 5, then find the value of b2 – 4ac
State whether the following quadratic equation have two distinct real roots. Justify your answer.
`sqrt(2)x^2 - 3/sqrt(2)x + 1/sqrt(2) = 0`
If α, β are roots of the equation x2 + px – q = 0 and γ, δ are roots of x2 + px + r = 0, then the value of (α – y)(α – δ) is ______.
Which of the following equations has imaginary roots?