Evaluate the given equation by any suitable method : √(2x-1) = x

Solve the following equation by substitution method.

x^2/7 + x^1/7 - 2 = 0

By using the quadratic formula, solve the following equation.

x² + 20x + 96 = 0

Use any method to solve the given equation. x/(x -4) +4/(x +4) = -23/(x² -16)

By completing the square, solve the following equation.

x² - 2x - 23 = 0