Advertisements
Advertisements
प्रश्न
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`
उत्तर
The equation `sqrt(2)x^2 - 3/sqrt(2)x + 1/sqrt(2)` = 0 has two real and distinct roots.
D = b2 – 4ac
= `(-3/sqrt(2))^2 - 4(sqrt(2))(1/2)`
= `(9/2) - 2sqrt(2) > 0`
Hence, the roots are real and distinct.
APPEARS IN
संबंधित प्रश्न
For what value of m, are the roots of the equation (3m + 1)x2 + (11 + m) x + 9 = 0 equal?
Is it possible to design a rectangular park of perimeter 80 and area 400 m2? If so find its length and breadth.
Find the value of k for which the roots of the equation 3x2 -10x +k = 0 are reciprocal of each other.
In each of the following determine the; value of k for which the given value is a solution of the equation:
kx2 + 2x - 3 = 0; x = 2
Discuss the nature of the roots of the following quadratic equations : x2 – 4x – 1 = 0
Discuss the nature of the roots of the following equation: `5x^2 - 6sqrt(5)x + 9` = 0
If the one root of the equation 4x2 – 2x + p – 4 = 0 be the reciprocal of the other. The value of p is:
Find whether the following equation have real roots. If real roots exist, find them.
`1/(2x - 3) + 1/(x - 5) = 1, x ≠ 3/2, 5`
The sum of all integral values of k(k ≠ 0) for which the equation `2/(x - 1), 1/(x - 2) = 2/k` in x has no real roots, is ______.
If 3 is a root of the quadratic equation x2 – px + 3 = 0 then p is equal to ______.