Advertisements
Advertisements
प्रश्न
Find the value of the discriminant in the following quadratic equation :
x2 +2x+4=0
Advertisements
उत्तर
x2 +2x+4=0
Discriminant = b2 - 4ac
= (2)2 - 4(1)(4)
= 4 -16
= - 12
APPEARS IN
संबंधित प्रश्न
Solve the following quadratic equation by using formula method: 5m2 + 5m – 1 = 0
Solve the quadratic equation 2x2 + ax − a2 = 0 for x.
Find the values of k for which the given quadratic equation has real and distinct roots:
kx2 + 6x + 1 = 0
(3x - 5)(2x + 7) = 0
Without actually determining the roots comment upon the nature of the roots of each of the following equations:
x2 - 5x + 7 = 0
If `(2)/(3)` and – 3 are the roots of the equation px2+ 7x + q = 0, find the values of p and q.
Find the nature of the roots of the following quadratic equations: `x^2 - (1)/(2)x - (1)/(2)` = 0
If –5 is a root of the quadratic equation 2x2 + px – 15 = 0, then:
Find the value(s) of 'a' for which the quadratic equation x2 – ax + 1 = 0 has real and equal roots.
The roots of the quadratic equation x2 – 6x – 7 = 0 are ______.
