Question

What number must you add to complete the square?

x^2 + 12x = -5

A. 144
B. 36
C. 6
D. 12

Answer 1

did you see what I wrote earlier?

Answer 2

i accidentally deleted it

Answer 3

ax^2 + bx + c

(b/2)^2 = the number you add to complete the square

Answer 4

take 12/2 and then square it

Answer 5

or well the only square that will get you 12x is
(x+6)(x+6)

Answer 6

When the coefficient of the x^2 term is 1, add the square of half of the coefficient of x.

Answer 7

That was a lot of similar information at once.

Answer 8

B, 36.

Answer 9

\[x^2+12x=-5\]
we need this form to be in that form:
\[x^2+12x+(\frac{ 12 }{ 2 })^2-(\frac{ 12 }{ 2 })^2=-5\]
then complete the square
\[[x^2+12x+36]-36=-5\]
\[(x+6)^2-36+5=0\]
\[(x+6)^2-31=0\]

Answer 10

are those the correct options?

Answer 11

Are you positive?

jdaub18