Mariya is solving the quadratic equation by completing the square.4x2 – 20x + 3 = 0 4x2 – 20x = –3 A(x2 – 5x) = –3What is the value of A?

The value of A is 4 

4x2 – 20x + 3 = 0  
                 -3    -3

4x2 - 20 x = - 3

Pull out common factor which is 4 

4 ( x2 - 5x) = - 3