Posted by timothy on .
solve by completing the square
x^23x=4
please show work

math 
Steve,
x^2  2(3/2)x = 4
x^2  2(3/2)x + (3/2)^2 = 4 + (3/2)^2
(x3/2)^2 = 25/4
(x3/2)^2 = (5/2)^2
x  3/2 = ±5/2
x = 3/2 ± 5/2 = 1 or 4