Question

What number would you have to add to both sides to complete the square?

x^2 + 12x = –6

A.
144

B.
36

C.
–144

D.
–36

Answer 1

half of b, all squared

Answer 2

you will add the square of half of the co-efficient of x

Answer 3

so, whats the co-efficient of x here ?

Answer 4

-2 ?

Answer 5

-2 ?
i see a '12' with x

Answer 6

so, divide 12 by 2 and square it.

Answer 7

its 2.449

Answer 8

so then what

Answer 9

whats 2.499 ? :O
12/2 = 6
and 6^2 is just 36
thats it!

Answer 10

oh ok