-9,72х²=0

To solve the equation \(-9.72x^2 = 0\), we can follow these steps:

1. Isolate the variable: We can divide both sides by -9.72, but since multiplying or dividing by a non-zero constant doesn't change the equality and in this case results in zero:

   \[ x^2 = 0 \]

2. Solving for \(x\): We take the square root of both sides:

   \[ x = 0 \]

So, the solution to the equation \(-9.72x^2 = 0\) is:

\[ x = 0 \]