Question Simplify the expression x3−9x2+27x−27 Evaluate (x−3)3Use (a−b)3=a3−3a2b+3ab2−b3 to expand the expression x3−3x2×3+3x×32−33Solution x3−9x2+27x−27 Show Solution Find the roots x=3 Evaluate (x−3)3To find the roots of the expression,set the expression equal to 0 (x−3)3=0The only way a power can be 0 is when the base equals 0 x−3=0Move the constant to the right-hand side and change its sign x=0+3Solution x=3 Show Solution
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Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix