If the roots of equation $ax^2 + bx + c = 0$, $a
eq 0$ are real and equal, then which of the following relation is true?

Question

If the roots of equation $ax^2 + bx + c = 0$, $a 
eq 0$ are real and equal, then which of the following relation is true?

Accepted Answer

Step 1: For real and equal roots, discriminant $= 0$: $b^2 - 4ac = 0 \Rightarrow ac = \frac{b^2}{4}$

Question