Algebraic Techniques, SMB-059 Expand and simplify the expression `(4-7x)^2` (2 marks) Show Answers Only `49x^2-56x+16` Show Worked Solution `(4-7x)^2` `=(4-7x)(4-7x)` `=16-28x-28x+49x^2` `=49x^2-56x+16`