simplify: x^2 - 9x / (45x-5x^2)... thanks
(x^2 - 9x) / (45x - 5x^2) =
x(x - 9) / 5x(9 - x) =
-x(9 - x) / 5x(9 - x) =
-1/5
x*(x - 9)/(5*x*(9 - x)) =
- x*(x - 9)/(5*x*(x - 9)) = - x/(5*x) = - 1/5, answer!
Comments
(x^2 - 9x) / (45x - 5x^2) =
x(x - 9) / 5x(9 - x) =
-x(9 - x) / 5x(9 - x) =
-1/5
x*(x - 9)/(5*x*(9 - x)) =
- x*(x - 9)/(5*x*(x - 9)) = - x/(5*x) = - 1/5, answer!