Question 597446
Hello, 
This SQUARE ROOT OF (Z+5)= 2Z is solved by squaring both sides to get:
Z+5= (2Z)^2
Subtract Z and 5:
0=4z^2-z-5
Factor:
0=(4z-5)(z+1)
Solve for z
4z-5=0
z=5/4
and 
z=-1
Now plug these answers into the original and see if they work. You'll find one of these answers don't work. I'll let you find out which one it is. 
RJ
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