Express each of the following in the form ( x - m )^2 + n.

Question

c) x^2 - 5x

Answer 1

recall that (x-a)^2 = x^2 - 2ax + a^2
x^2 - 5x
x^2 - 5x + (5/2)^2 - (5/2)^2
(x - 5/2)^2 - 25/4