
Example: Using appropriate formula and find the value of (98)^{2}. Solution: We can change the given problem like (1002)^{2}. This is in the form of (ab)^{2}, so we can use this formula, (1002)^{2} = (100)^{2}  2.100.2 + (2)^{2} = 10000  400 + 4 = 10004  400 = 9604
Directions: Solve the following problems using appropriate formula. Also write at least ten examples of your own. 