Identify binomial and formula: Identify the binomial to be squared and the special case formula.The given expression is (3u−4)2, which is in the form of (a−b)2.Special case: (a−b)2=a2−2ab+b2
Identify values of a and b: Identify the values of a and b. Compare (3u−4)2 with (a−b)2. a=3ub=4
Apply binomial square formula: Apply the square of a binomial formula to expand (3u−4)2.(a−b)2=a2−2ab+b2(3u−4)2=(3u)2−2(3u)(4)+42