What is the solution to 5x 2 x-4x?

To solve the expression (5x^2 - 4x), you can factor it. First, you can factor out the common term (x): (x(5x - 4)). This expression represents a quadratic polynomial, and the solutions for (x) can be found by setting (5x - 4 = 0), giving (x = \frac{4}{5}) as one solution, while (x = 0) is another.