Question Factor the expression Factor (2a−1)2 Evaluate 4a2−4a+1Solution (2a−1)2 Show Solution Find the roots Find the roots of the algebra expression a=21Alternative Form a=0.5 Evaluate 4a2−4a+1To find the roots of the expression,set the expression equal to 0 4a2−4a+1=0Use a2−2ab+b2=(a−b)2 to factor the expression (2a−1)2=0Simplify the expression 2a−1=0Move the constant to the right-hand side and change its sign 2a=0+1Removing 0 doesn't change the value,so remove it from the expression 2a=1Divide both sides 22a=21Solution a=21Alternative Form a=0.5 Show Solution