Question

a quadratic equation ax^2 +bx+c=0 had _________ equal roots ,if b^2-4ac=c​

Answer 1

Answer:

In the quadratic equation ax^2 + bx + c = 0, the two roots can be equal if (b^2–4ac)^0.5 = 0, or if

(b^2–4ac) = 0, or

b = 2√(ac).

In that case, the equal roots of x will be b/(2a).