Question Simplify the expression x2−x+41 Evaluate (x−21)2Use (a−b)2=a2−2ab+b2 to expand the expression x2−2x×21+(21)2Solution x2−x+41 Show Solution Factor the expression 41(2x−1)2 Evaluate (x−21)2Evaluate x2−x+41Solution 41(2x−1)2 Show Solution Find the roots x=21Alternative Form x=0.5 Evaluate (x−21)2To find the roots of the expression,set the expression equal to 0 (x−21)2=0The only way a power can be 0 is when the base equals 0 x−21=0Move the constant to the right-hand side and change its sign x=0+21Solution x=21Alternative Form x=0.5 Show Solution