Consider the following equations and solve for all values of x that will satisfy them. y = 4x² - 4x and y = -1

Solve the following equation by using your preferred method: (3x + 1)(x + 2) = 4

For the given solution set {2, -1}, write a quadratic equation in a general form. 

By completing the square, solve the following equation.

x² - 20x = 7