Question

Complete the square to make the binomial x^2-8x a perfect trinomial

Answer 1

The general Formula looks like this:

`x^2 +bx + ( (b)/(2))^2`
This really only involves 2 steps:
1) Take half of "x" coefficient. ----> -8/2 = -4
2) Square that number. ----------> (-4)^2 = 16

Perfect trinomial for this example is then:

`x^2 -8x+16`