Question Factor the expression (3−y)(9+3y+y2) Evaluate 27−y3Rewrite the expression in exponential form 33−y3Use a3−b3=(a−b)(a2+ab+b2) to factor the expression (3−y)(32+3y+y2)Solution (3−y)(9+3y+y2) Show Solution Find the roots y=3 Evaluate 27−y3To find the roots of the expression,set the expression equal to 0 27−y3=0Move the constant to the right-hand side and change its sign −y3=0−27Removing 0 doesn't change the value,so remove it from the expression −y3=−27Change the signs on both sides of the equation y3=27Take the 3-th root on both sides of the equation 3y3=327Calculate y=327Solution More Steps Evaluate 327Write the number in exponential form with the base of 3 333Reduce the index of the radical and exponent with 3 3 y=3 Show Solution
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