It looks like you are working with a determinant equation where you need to solve for $x$. Your hint suggests that the determinant $|A| = 0$, meaning we need to find the values of $x$ that satisfy this condition.

Could you clarify if "A" is a matrix and provide its full structure? If it's a determinant problem, please share the full determinant equation or matrix so that I can help solve for $x$. You can also upload a picture of the problem.

Would you like to provide more details or an image?

Meanwhile, here are five related questions:

1. How do you find the determinant of a $2 \times 2$ or $3 \times 3$ matrix?
2. What does it mean if the determinant of a matrix is zero?
3. How do you solve a quadratic equation derived from a determinant?
4. What are the properties of determinants that can simplify calculations?
5. How do systems of equations relate to determinant calculations?

Tip:

If a determinant equals zero, it means the matrix is singular and does not have an inverse. This is key in solving systems of equations.