Question Factor the expression (a−4)2 Evaluate a2−8a+16Solution (a−4)2 Show Solution Find the roots a=4 Evaluate a2−8a+16To find the roots of the expression,set the expression equal to 0 a2−8a+16=0Use a2−2ab+b2=(a−b)2 to factor the expression (a−4)2=0Simplify the expression a−4=0Move the constant to the right-hand side and change its sign a=0+4Solution a=4 Show Solution
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