Question Simplify the expression b2−2b+1 Evaluate (b−1)2Use (a−b)2=a2−2ab+b2 to expand the expression b2−2b×1+12Solution b2−2b+1 Show Solution Find the roots b=1 Evaluate (b−1)2To find the roots of the expression,set the expression equal to 0 (b−1)2=0The only way a power can be 0 is when the base equals 0 b−1=0Move the constant to the right-hand side and change its sign b=0+1Solution b=1 Show Solution
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