Question

If the roots of 4x² – 8K+ 5 = 0 are
equal, the values of Kare​

Answer 1

Answer:

k=-16

Step-by-step explanation:

Answer 2

Answer:

value of k equals

$\frac{ \sqrt{5} }{2}$

Step-by-step explanation:

if the roots are equal then the discriminant

∆ = b²- 4ac = 0

${ ( - 8k)}^{2} - 4(5)(4) = 0\\64 {k}^{2} - 80 = 0 \\ 64 {k}^{2} = 80 \\ {k}^{2} = \frac{80}{64} = \frac{5}{4} \\ k = \sqrt{ \frac{5}{4} } = \frac{ \sqrt{5} }{2}$