If a teacher wants to share the concept of the formula '(a - b)2 = a2 - 2ab + b2, which question among the following should be raised to evaluate the previous knowledge required for the content?
[T means 'True'; F means 'False' ]
1
72 = 49 (T/F)
2
10 × 10 = 102 (T/ F)
3
252 = 625
4
None of the above