Advertisements
Advertisements
प्रश्न
Find the value of the discriminant in the following quadratic equation:
x2 +2x-2=0
Advertisements
उत्तर
x2 +2x-2=0
Discriminant = b2 - 4ac
= (2)2 - 4(1)(-2)
= 4 + 8
= 12
APPEARS IN
संबंधित प्रश्न
Find the value(s) of k so that the quadratic equation 3x2 − 2kx + 12 = 0 has equal roots ?
Determine the nature of the roots of the following quadratic equation :
2x2 -3x+ 4= 0
`sqrt(3)x^2 + 10x + 7sqrt(3)` = 0
Find the values of k for which each of the following quadratic equation has equal roots: 9x2 + kx + 1 = 0 Also, find the roots for those values of k in each case.
Find the value(s) of p for which the quadratic equation (2p + 1)x2 – (7p + 2)x + (7p – 3) = 0 has equal roots. Also find these roots.
If roots of a quadratic equation 3y2 + ky + 12 = 0 are real and equal, then find the value of ‘k’.
The equation 2x2 + kx + 3 = 0 has two equal roots, then the value of k is:
Find whether the following equation have real roots. If real roots exist, find them.
–2x2 + 3x + 2 = 0
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 roots of the quadratic equation px2 – qx + r = 0 are real and equal if ______.
