Advertisements
Advertisements
प्रश्न
Choose the correct alternative answer for the following sub questions and write the correct alphabet.
What is the value of discriminant for the quadratic equation X2 – 2X – 3 = 0?
पर्याय
– 16
16
8
4
Advertisements
उत्तर
16
संबंधित प्रश्न
Solve the following quadratic equation by using formula method: 5m2 + 5m – 1 = 0
Find the value of p for which the quadratic equation (2p + 1)x2 − (7p + 2)x + (7p − 3) = 0 has equal roots. Also find these roots.
Without solving, examine the nature of roots of the equation 4x2 – 4x + 1 = 0
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:
x2 - 2(5 + 2k)x + 3(7 + 10k) = 0
Find the values of k for which the roots are real and equal in each of the following equation:
x2 - 4kx + k = 0
In the following determine the set of values of k for which the given quadratic equation has real roots:
4x2 - 3kx + 1 = 0
Write the value of k for which the quadratic equation x2 − kx + 4 = 0 has equal roots.
Find if x = – 1 is a root of the equation 2x² – 3x + 1 = 0.
`sqrt(3)x^2 + 11x + 6sqrt(3)` = 0
Without solving the following quadratic equation, find the value of ‘p’ for which the given equation has real and equal roots:
x² + (p – 3) x + p = 0
Solve for x : `9^(x + 2) -6.3^(x + 1) + 1 = 0`.
Determine whether the given quadratic equations have equal roots and if so, find the roots:
x2 + 5x + 5 = 0
The roots of the equation 7x2 + x – 1 = 0 are:
The equation 12x2 + 4kx + 3 = 0 has real and equal roots, if:
The value of k for which the equation x2 + 2(k + 1)x + k2 = 0 has equal roots is:
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`
Find the roots of the quadratic equation by using the quadratic formula in the following:
`1/2x^2 - sqrt(11)x + 1 = 0`
For the roots of the equation a – bx – x2 = 0; (a > 0, b > 0), which statement is true?
If x = 3 is one of the roots of the quadratic equation x2 – 2kx – 6 = 0, then the value of k is ______.
