Use the quadratic equation to solve the problemx^2-5x=-9?

Question

use the quadratic equation to solve the problem

Answer 1

if the quadratic equation is     x = -b +or- square root b squared minus 4ac all over 2a (a is the coeffcent of x^2 etc) then the equation equals to  

x = 5 +and- i square root of 11 / 2 (5 +and- square root of -11/5)

Answer 2

Put it into standard form:

x^2 - 5x + 9 = 0

In this case, a = 1, b = -5 and c = 9.  The Quadratic Formula is

x = (-b +/- sqrt(b^2 - 4ac))/2a

= (-(-5) +/- sqrt((-5)^2 - 4(1)(9)))/2(1)

= (5 +/- sqrt(25 - 36))/2

= (5 +/- 3i)/2

where i is the imaginary, the square root of -1.