Question Simplify the expression n2−24n+144 Evaluate (n−12)2Use (a−b)2=a2−2ab+b2 to expand the expression n2−2n×12+122Solution n2−24n+144 Show Solution Find the roots n=12 Evaluate (n−12)2To find the roots of the expression,set the expression equal to 0 (n−12)2=0The only way a power can be 0 is when the base equals 0 n−12=0Move the constant to the right-hand side and change its sign n=0+12Solution n=12 Show Solution