Question Simplify the expression x2−16x+64 Evaluate (x−8)(x−8)Multiply the terms (x−8)2Use (a−b)2=a2−2ab+b2 to expand the expression x2−2x×8+82Solution x2−16x+64 Show Solution Find the roots x=8 Evaluate (x−8)(x−8)To find the roots of the expression,set the expression equal to 0 (x−8)(x−8)=0Multiply the terms (x−8)2=0The only way a power can be 0 is when the base equals 0 x−8=0Move the constant to the right-hand side and change its sign x=0+8Solution x=8 Show Solution
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