Solve the equation ( x² - 7x = 2 ). Use the discriminant, ( b² - 4ac ), to determine the number of solutions of the given quadratic equation. Then solve the quadratic equation using the formula ( x = -b ± √b² - 4ac/2a ).

a) Two solutions: ( x = 7 ± √51/2 )
b) Two solutions: ( x = 7 ± √53/2 )
c) One solution: ( x = 7 ± √51/2 )
d) One solution: ( x = 7 ± √53/2 )