Question Simplify the expression 144x2−72x+9 Evaluate (12x−3)2Use (a−b)2=a2−2ab+b2 to expand the expression (12x)2−2×12x×3+32Solution 144x2−72x+9 Show Solution Factor the expression 9(4x−1)2 Evaluate (12x−3)2Evaluate 144x2−72x+9Solution 9(4x−1)2 Show Solution Find the roots x=41Alternative Form x=0.25 Evaluate (12x−3)2To find the roots of the expression,set the expression equal to 0 (12x−3)2=0The only way a power can be 0 is when the base equals 0 12x−3=0Move the constant to the right-hand side and change its sign 12x=0+3Removing 0 doesn't change the value,so remove it from the expression 12x=3Divide both sides 1212x=123Divide the numbers x=123Solution x=41Alternative Form x=0.25 Show Solution