Question Simplify the expression −x2+8x−16 Evaluate −(x−4)2Expand the expression More Steps Evaluate (x−4)2Use (a−b)2=a2−2ab+b2 to expand the expression x2−2x×4+42Calculate x2−8x+16 −(x2−8x+16)Solution −x2+8x−16 Show Solution Find the roots x=4 Evaluate −(x−4)2To find the roots of the expression,set the expression equal to 0 −(x−4)2=0Change the signs on both sides of the equation (x−4)2=0The only way a power can be 0 is when the base equals 0 x−4=0Move the constant to the right-hand side and change its sign x=0+4Solution x=4 Show Solution
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