Question

the value of C for which the equation X square + bx + c equal to zero has equal roots​

Answer 1

Answer: c=b²/4a

Step-by-step explanation:

determinant=b²-4c

if roots are equal b²-4ac=0

b²=4ac

b²/4a=c

Answer 2

Answer:

$c=\frac{b^2}{4}$

Your question : Find c for when $x^2+bx+c=0$ has equal roots

The discriminant of the equation is $D=b^2-4c$.

Also, $D=0$.

Hence, $b^2-4c=0$.

Expressing $b^2-4c=0$ for c, we get $c=\frac{b^2}{4}$.