Question Simplify the expression 8−36x+54x2−27x3 Evaluate (2−3x)3Use (a−b)3=a3−3a2b+3ab2−b3 to expand the expression 23−3×22×3x+3×2(3x)2−(3x)3Solution 8−36x+54x2−27x3 Show Solution Find the roots x=32Alternative Form x=0.6˙ Evaluate (2−3x)3To find the roots of the expression,set the expression equal to 0 (2−3x)3=0The only way a power can be 0 is when the base equals 0 2−3x=0Move the constant to the right-hand side and change its sign −3x=0−2Removing 0 doesn't change the value,so remove it from the expression −3x=−2Change the signs on both sides of the equation 3x=2Divide both sides 33x=32Solution x=32Alternative Form x=0.6˙ Show Solution
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