What is the b^2 - 4ac of x^2-5x+4=0

9

Explanation:

Given parameters:

    what is  b² - 4ac  of

 Equation x² - 5x + 4 = 0

Solution:

    x² - 5x + 4 in the form ax + bx + c = 0

  a is the coefficient of x²  = 1

                                      b = -5

                                      c = 4

Input the parameters and solve;

   b² - 4ac = -5² - 4(1)(4)

                 = 25 - 16

                  = 9