Posted by BERNIE on .
can you help me to solve for completing the squar x^2+18x=4

algebra2 
Reiny,
x^2 + 18x = 4
take half of the 18, square it, then add to both sides
x^2 + 18x + 81 =4 + 81
(x+9)^2 = 77
x+9 = ±√77
x = 9 ± √77