Question

If quadratic equation ax²+bx+c=0 has equal roots then find c in terms of a and b

Answer 1

When a Quadratic Equation has equal roots the discriminant is always equal to 0. And discriminant of a quadratic equation is b^2-4ac.
Here
${b}^{2} - 4ac = 0 \: so \: c = \frac{ {b}^{2} }{4a}$