Solve by any method: 3x^{2} +27x = 30
Divide by 3: x^{2} + 9x = 10
Subtract 10 from both sides: x^{2} + 9x  10 = 0
Factor: (x + 10) (x  1) = 0
Set each factor = to zero: x + 10 = 0 and x  1 = 0
Solve: x = 10, 1
Note, you can check these answers by plugging them into the original equation.
Oct 22

James H.