Expand and simplify the expression `(a+b)^2-(a-b)^2` (2 marks)
Algebraic Techniques, SMB-059
Expand and simplify the expression `(4-7x)^2` (2 marks)
Algebraic Techniques, SMB-058
Expand and simplify the expression `(c-2)^2` (2 marks)
Algebraic Techniques, SMB-057
Expand and simplify the expression `(2x-5)^2` (2 marks)