Question Solve the quadratic equation Solve by factoring Solve using the quadratic formula Solve by completing the square Load more k1=0,k2=21 Evaluate 9k2−189k=0Factor the expression More Steps Evaluate 9k2−189kRewrite the expression 9k×k−9k×21Factor out 9k from the expression 9k(k−21) 9k(k−21)=0When the product of factors equals 0,at least one factor is 0 k−21=09k=0Solve the equation for k More Steps Evaluate k−21=0Move the constant to the right-hand side and change its sign k=0+21Removing 0 doesn't change the value,so remove it from the expression k=21 k=219k=0Solve the equation for k k=21k=0Solution k1=0,k2=21 Show Solution Graph