Question

Find the value that completes the square and then rewrite as a perfect square.
x2+13x+____

Answer 1

welll

\[(x+a)^2 = x^2+2ax+a^2\]

Answer 2

if 13x = 2ax
what is a?

Answer 3

6.5?

Answer 4

right,
then what is \(6.5^2\)?

Answer 5

42.25

Answer 6

right, so the missing value is 42.25

Answer 7

and then write it in the format of
\((x+a)^2\)

Answer 8

\[(x+6.5)^{2}\]

Answer 9

and that is how you "complete the square"

Answer 10

thank you!