Identify Binomial & Formula: Identify the binomial to be squared and the special case formula.The given expression is (4z−2)2, which is a binomial squared. The special case formula for the square of a binomial (a−b)2 is a2−2ab+b2.
Identify a and b: Identify the values of a and b in the binomial.In the expression (4z−2)2, a is 4z and b is 2. We will use these values in the special case formula.
Apply Special Case Formula: Apply the special case formula to expand (4z−2)2. Using the formula (a−b)2=a2−2ab+b2, we substitute a with 4z and b with 2: (4z−2)2=(4z)2−2⋅(4z)⋅2+22
Simplify Expression: Simplify the expression by performing the calculations.(4z)2−2×(4z)×2+22=16z2−16z+4
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