Question Simplify the expression x2−20x+100 Evaluate (x−10)(x−10)Multiply the terms (x−10)2Use (a−b)2=a2−2ab+b2 to expand the expression x2−2x×10+102Solution x2−20x+100 Show Solution Find the roots x=10 Evaluate (x−10)(x−10)To find the roots of the expression,set the expression equal to 0 (x−10)(x−10)=0Multiply the terms (x−10)2=0The only way a power can be 0 is when the base equals 0 x−10=0Move the constant to the right-hand side and change its sign x=0+10Solution x=10 Show Solution
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