Question Factor the expression 9(9−2k) Evaluate 81−18kSolution 9(9−2k) Show Solution Find the roots k=29Alternative Form k=4.5 Evaluate 81−18kTo find the roots of the expression,set the expression equal to 0 81−18k=0Move the constant to the right-hand side and change its sign −18k=0−81Removing 0 doesn't change the value,so remove it from the expression −18k=−81Change the signs on both sides of the equation 18k=81Divide both sides 1818k=1881Divide the numbers k=1881Solution k=29Alternative Form k=4.5 Show Solution
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