Q. Expand. If necessary, combine like terms.(5x+1)(5x−1)=
Identify special case: Identify the special case that applies to the given expression.The expression (5x+1)(5x−1) is in the form of (a+b)(a−b).Special case: (a+b)(a−b)=a2−b2
Identify values of a and b: Identify the values of a and b.Compare (5x+1)(5x−1) with (a+b)(a−b).a=5xb=1
Apply difference of squares formula: Apply the difference of squares formula to expand (5x+1)(5x−1).(a+b)(a−b)=a2−b2(5x+1)(5x−1)=(5x)2−(1)2