Advertisements
Advertisements
प्रश्न
Which of the following are the roots of` 3x^2+2x-1=0?`
-1
उत्तर
The given equation is `(3x^2+2x-1=0)`
x=(-1)
L.H.S`=x^2+2x-1`
`=3x(-1)^2+2x(-1)-1`
=3-2-1
=0
Thus, (-1) is root of `(3x^2+2x-1=0)`
APPEARS IN
संबंधित प्रश्न
Write the discriminant of the following quadratic equations:
(x − 1) (2x − 1) = 0
Write the discriminant of the following quadratic equations:
4x2 - 3kx + 1 = 0
`2x^2+x-6=0`
`3x^2-2x+8=0`
Find the roots of the each of the following equations, if they exist, by applying the quadratic formula:
`x^2-4x-1=0`
`2x^2-2sqrt2x+1=0`
`x-1/x=3,x≠0`
`4x^2-4bx-(a^2-b^2)=0`
Find the values of k for which the given quadratic equation has real and distinct root:
`5x^2-kx+1=0`
For what values of k, the roots of the quadratic equation (k + 4) x2 + (k + 1) x + 1 = 0 are equal ?
