SOLUTION: Consider the equation x^2-18x=3. What number must be added to both sides of the equation in order to complete the square. The answer is one of the following. Which one is it?

Algebra ->  Equations -> SOLUTION: Consider the equation x^2-18x=3. What number must be added to both sides of the equation in order to complete the square. The answer is one of the following. Which one is it?      Log On


   

Question 1198776: Consider the equation x^2-18x=3. What number must be added to both sides of the equation in order to complete the square.
The answer is one of the following. Which one is it?
A) 9
B) 18
C) 27
D) 81
Found 2 solutions by ikleyn, Alan3354:
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.

81.    ANSWER


CHECK.    x^2 - 18x + 81 = (x-9)^2.


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
c = (b/2a)^2 = (-18/2)^2 = 81