Question

If the equation x2-8x+k=0 has equal roots. Find the value of k​

Answer 1

I think we have to transpose k and find the value of X first by factorisation method and then applying that will give you the answer of k

Hope it helps you..

Answer 2

Answer:

k = 16

Explanation:

[ Refer to the attachment ]

For roots to be equal discriminante must be zero

Discriminante is used Shreedhraacharya method to find roots ,

if ax² + bx + c = 0 is a equation

then, Shreedhraacharya formula is

$x = \frac{ - b \binom{ + }{ - } \sqrt{ {b}^{2} - 4ac} }{2a} \\ \\ x = \frac{ - b \binom{ + }{ - } \sqrt{d} }{2a} \\ \\ where \: d \: is \: discreminant$