Answers

2016-06-21T17:01:17+08:00
If m=2,

m^2 - 4m + 4 = 0
2^2 - 4(2) +4
4 - 8 +4 = 0 (to avoid confusion in this part, remember the PEMDAS/MDAS rule)
4 - 4 = 0
0 = 0

Yes it does satisfy the equation.

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2016-06-21T17:02:38+08:00
The answer is Yes, because as you substitute the value of m that is 2 in the equation, you will get 0.
0