Monday 20 May 2013

Absolute value equations

1.  | x +5  |  = 11

solution


±(x + 5) = 11
x+5 = 11 or  -(x + 5) = 11 
x + 5 = 11 or -x-5 =11
x=11-5 or -x = 11+5
x=6 or -x = 16
x=6 or x = -16  Answer