Question

x^2+9x+____?

Answer 1

x^2+9x+(9/2)^2

Answer 2

then what do i do after that?

Answer 3

i have x^2-9x+81/4. then im stuck

Answer 4

that's it.

Answer 5

what exactly are you asked to do?

Answer 6

add the proper constant to the binomial so that the resulting trinomial is a perfect square. then factor the trinomial

Answer 7

okay thanks so much

Answer 8

(x-9/2)(x-9/2)