Classify Solutions to Quadratic Equations

Question

Use the Quadratic Formula to solve the equation:

x(x−6)=−16

Answer 1

To use the quadratic formula, first put the equation in standard quadratic form: x² - 6x +16 = 0

a = 1; b = -6; c =16

 

x = (6 ± √(36 - 64) / 2

x = 3 ± (√(-28)) / 2

x = 3 ± (√(4)√(-7)) / 2

x = 3 ± √(-7)

The solutions are x = 3 + 7i and x = 3 - 7i, where i = √(-1)

Answer 2

Are you sure it isn't ..... = +16?  Not a possible equation to solve as stated.