Question Simplify the expression 1−2a+a2 Evaluate (1−a)2Use (a−b)2=a2−2ab+b2 to expand the expression 12−2×1×a+a2Solution 1−2a+a2 Show Solution Find the roots a=1 Evaluate (1−a)2To find the roots of the expression,set the expression equal to 0 (1−a)2=0The only way a power can be 0 is when the base equals 0 1−a=0Move the constant to the right-hand side and change its sign −a=0−1Removing 0 doesn't change the value,so remove it from the expression −a=−1Solution a=1 Show Solution
Algebra
Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix