Question

Write the discriminant of the following quadratic equation:

4x²-3kx+1=0

Answer 1

The given equation has 4x²-3kx+1=0

Here a=4, b=-3k, c=1

D=b²-4ac≥0

(9k)²-4x4x1≥0

=> 9k²-16≥0

=>9k²≥16

=>k≥√(16/9)

=> k≥ ±4/3