SOLUTION: Find the value of "c" that makes the trinomial a perfect square: x^2-8x+c

Algebra ->  Absolute-value -> SOLUTION: Find the value of "c" that makes the trinomial a perfect square: x^2-8x+c      Log On


   

Question 178393This question is from textbook
: Find the value of "c" that makes the trinomial a perfect square: x^2-8x+c This question is from textbook

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2+-+8x+%2B+c
To complete the square, The rule is to take 1/2 of the
coefficient of x and square it, so
c+=+%28-8%2F2%29%5E2
c+=+16 answer
x%5E2+-+8x+%2B+16
x+-+4%29%5E2