Question

What number completes the square? x^2 - 18x + ?
A. 81
B. 64
C. 36
D. 324

Answer 1

A

Answer 2

The answer is A) 81.
The reason being that the number that completes the square is (b/2)^2.
The "b" in your problem is -18. -18/2 is -9. -9^2 is 81.

Answer 3

Beat me to it :D

Answer 4

Lol thanx

Answer 5

what the monkey is an animorph?

Answer 6

Solve using the square root method. 9x2 - 25 = 0
A. {-5/3, 5/3}
B. {-3/5, 3/5}
C. {-3, 5}
D. {-5, 3}

Answer 7

Please help

Answer 8

@satellite73, , an animorph is part of a book series called Animorph! :D

Answer 9

add 25 to both sides,
divide by 9
take the square root
don't forget the \(\pm\)

Answer 10

^ Do that :D

Answer 11

i used to be a carnival mind reader

Answer 12

ok

Answer 13

Or factor it
\[
(3 x -5)(3x +5) =0
\]

Answer 14

@friedch1cken Rachel was quite cool. Just saying.