SOLUTION: Z2-4z+4

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Question 984335: Z2-4z+4
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

z%5E2-4z%2B4 ...I guess you need to factor it; if yes, then
z%5E2-2z-2z%2B4
%28z%5E2-2z%29-%282z-4%29
z%28z-2%29-2%28z-2%29
%28z-2%29%28z-2%29
but, if you need to solve for z, then you will have to meke it equal to zero first
%28z-2%29%28z-2%29=0
if %28z-2%29=0=> z=2 (one double solution)