Question Simplify the expression 9x2−12x+4 Evaluate (3x−2)2Use (a−b)2=a2−2ab+b2 to expand the expression (3x)2−2×3x×2+22Solution 9x2−12x+4 Show Solution Find the roots x=32Alternative Form x=0.6˙ Evaluate (3x−2)2To find the roots of the expression,set the expression equal to 0 (3x−2)2=0The only way a power can be 0 is when the base equals 0 3x−2=0Move the constant to the right-hand side and change its sign 3x=0+2Removing 0 doesn't change the value,so remove it from the expression 3x=2Divide both sides 33x=32Solution x=32Alternative Form x=0.6˙ Show Solution
Algebra
Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix