Identify values of a and b: Identify the values of a and b in the binomial (4s−2)2. Comparing (4s−2)2 with (a−b)2, we find that: a=4sb=2
Apply binomial square formula: Apply the square of a binomial formula to expand (4s−2)2.Using the values of a and b identified in the previous step, we get:(4s−2)2=(4s)2−2×(4s)×2+22