The quadratic equation 25x^2 - 20x + 4 = 0 can be solved using the quadratic formula. The solution is x = 0.4.
This expression is a quadratic equation of the form at² + bt + c = 0, where the constants are a = 25, b = -20, and c = 4.
To find the solutions, we can use the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a).
Substituting the values of a, b, and c into the formula, we get: x = (-(-20) ± √((-20)² - 4(25)(4))) / (2(25)).
Simplifying further, we have: x = (20 ± √(400 - 400)) / 50.
Since the discriminant (b² - 4ac) is equal to zero, there is only one solution.
Therefore, the solution to the equation is x = 0.4.