Question

if the quadratic equation kx square minus 2 minus 3 is equal to zero has equal roots then find the value of k

Answer 1

Answer:

Step-by-step explanation:

Answer 2

The value of k is $-\frac{1}{3}$

Step-by-step explanation:

Given : The quadratic equation $kx^2-2x-3=0$ has equal roots.

To find : The value of k ?

Solution :

When the quadratic equation $ax^2+bx+c=0$ has equal roots the discriminant is zero

i.e. $D=b^2-4ac=0$

Here, a=k, b=-2 and c=-3

Substitute the value,

$(-2)^2-4(k)(-3)=0$

$4+12k=0$

$12k=-4$

$k=-\frac{4}{12}$

$k=-\frac{1}{3}$

Therefore, the value of k is $-\frac{1}{3}$

#Learn more

For what value of k the quadratic equation kx square - kx + 1 =0 have equal roots

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