Advertisements
Advertisements
प्रश्न
In the following, determine whether the given quadratic equation have real roots and if so, find the roots:
3x2 - 2x + 2 = 0
उत्तर
We have been given, 3x2 - 2x + 2 = 0
Now we also know that for an equation ax2 + bx + c = 0, the discriminant is given by the following equation:
D = b2 - 4ac
Now, according to the equation given to us, we have,a = 3, b = -2 and c = 2.
Therefore, the discriminant is given as,
D = (-2)2 - 4(3)(2)
= 4 - 24
= -20
Since, in order for a quadratic equation to have real roots, D ≥ 0.Here we find that the equation does not satisfies this condition, hence it does not have real roots.
APPEARS IN
संबंधित प्रश्न
In the following, determine whether the given quadratic equation have real roots and if so, find the roots:
`3x^2+2sqrt5x-5=0`
In the following, determine whether the given quadratic equation have real roots and if so, find the roots:
`2x^2+5sqrt3x+6=0`
` 2x^2-7x+6=0`
`(x-1)(2x-1)=0`
`11-x=2x^2`
`x^2-(sqrt3+1)x+sqrt3=0`
`2x^2+5sqrt3x+6=0`
For what value of k are the roots of the quadratic equation `kx(x-2sqrt5)+10=0`real and equal.
Find the values of k for which the given quadratic equation has real and distinct roots:
`x^2-kx+9=0`
For what values of k, the roots of the quadratic equation (k + 4) x2 + (k + 1) x + 1 = 0 are equal ?