Question

If using the method of completing the square to solve the quadratic equation

x² + 17x - 22 = 0, which number would have to be added to "complete the
square"?

Answer 1

Answer: (b/2)^2 =
`(289)/(4) or 72.25`

Step-by-step explanation:

x^2 = a

17x = b

-22 = c

To find which number would have been added use the following formula:

`((b)/(2) )^(2)`

`((17)/(2) )^(2) = (289)/(4)`

If solving this equation the easier way would be to use the quadratic formula instead of completing the square.