Question

Express x squared minus 5x + 8 in the form (x-a) squared + b

Answer 1

(x-2.5)^2 + 1.75

Explanation:

To write that as an equation, we get x^2 - 5x + 8.

now, we need to complete the square:

x^2 - 5x + 6.25 + 1.75 =

(x-2.5)^2 + 1.75.